å
æ¥ãç§ã¯ãµãš 4374 ãš 4375 ãã©ã¡ãã 1 æ¡ã®çŽ å æ°ããæããªãããšã«æ°ã¥ããŸããã
ãããŠã224 ãš 225ã2400 ãš 2401 ãåæ§ã®æ§è³ªãæã€ãšç¥ã£ãŠããç§ã¯ã以äžã®ãããªèšç®ãåŸãŸããã
log ã¯å
šãŠåžžçšå¯Ÿæ°ã§ãã
224 â 225 ãã
5 log 2 + log 7 â 2 log 3 + 2 log 5
2400 â 2401 ãã
5 log 2 + log 3 + 2 log 5 â 4 log 7
4374 â 4375 ãã
log 2 + 7 log 3 â 4 log 5 + log 7
ãããŠã
log 2 + log 5 = 1
ããããé£ç«ã㊠4 å
1 次æ¹çšåŒãšæã£ãŠè§£ããšãå°æ°ç¬¬6äœåæšäºå
¥ã§
log 2 â 72/239 â 0.30126 ïŒçå€ 0.30103ïŒ
log 3 â 114/239 â 0.47699 ïŒçå€ 0.47712ïŒ
log 5 â 167/239 â 0.69874 ïŒçå€ 0.69897ïŒ
log 7 â 202/239 â 0.84519 ïŒçå€ 0.84510ïŒ
ããããŠæ¯èŒçç°¡åã«ããè¿äŒŒå€ãåŸãããããã§ãã
ãããèŠãŠçåãããã€ãã
(1)
åæ¯ 239 ãšããã®ã¯ã©ã®ãããã®åªç§ããªãã§ããããïŒ
ããªãã¡ã4 ã€ã®å¯Ÿæ°ãåæ¯ãå
±éãªæçæ°ã§è¿äŒŒããå Žåãåæ¯<1000 ãããã§äœçªç®ãããã«åªç§ãªè¿äŒŒå€ãåŸãããåæ¯ãªãã§ããããïŒ
ïŒçµ¶å¯Ÿèª€å·®ã®åã§è©äŸ¡ãããçžå¯Ÿèª€å·®ã®åã§è©äŸ¡ãããã§ãå€ãããšæããŸããïŒ
(2)
4 æ¡ã§å·®ã 1 ã§ãããã®ãããã7æ¡ä»¥äžã§å·®ã 11 ã 13 ãããã¯ããããå«ã 2 æ¡ãããã®åææ°ã§ãããã®ãçšããæ¹ã粟床ããããªããããªæ°ãããŸãâŠâŠæ¬åœã§ããããïŒ
æ¬åœã ãšããŠãå
·äœçã«ã©ã®ããã粟床ãäžããããã§ãããïŒ
ïŒå·®ã 1 æ¡ã®çŽ å æ°ããæããªããã®ã¯ãABCäºæ³ã®èšŒæãä¿¡ãããªã 44100 ããå
ã«ã¯ååšããªãã¯ãïŒ
(3)
â ã§ã¯ãªããäžçå·ã§ã®è©äŸ¡ã¯åæ§ã®æ¹æ³ã§å¯èœã§ããããïŒ
(4)
䜿ãçŽ æ°ã« 11 ãå«ã㊠5 å
1 次ã«ããã䜿ãçŽ æ°ã« 13 ãŸã§å«ã㊠6 å
1 次ã«ããããªã©ã§ç²ŸåºŠã®åäžã¯å¯èœã§ããããïŒ
ç¹ã« (1) (2) (4) ã¯æäœæ¥ã§ã¯ç¡è¬ã«ãã»ã©ãããã®ã§ãã³ã³ãã¥ãŒã¿ç³»ã®æŽè»ããé¡ãããŸãã
No.2156DD++2024幎9æ15æ¥ 10:30
ãšãããã(1)ã ã
> åæ¯ 239 ãšããã®ã¯ã©ã®ãããã®åªç§ããªãã§ããããïŒ
åæ¯ïŒ1000ã§ã¯(çžå¯Ÿèª€å·®ã®åèšã§)70çªç®ã«åªç§ã§ããã
239ã§çžå¯Ÿèª€å·®ã®åèšã¯0.001457âŠã§ãã
1äœã¯568ã§ãçžå¯Ÿèª€å·®ã®åèšã¯0.0001758âŠã§ãã
2äœä»¥äžã¯897,960,807,794,âŠãšç¶ããŸãããåæ¯ã倧ãããã°çžå¯Ÿèª€å·®ãå°ããã®ã¯åœç¶ã§ã
ããããæå³ã§ã¯69çªç®ãŸã§ã«åæ¯ã239æªæºã®ãã®ã¯ãããŸããã®ã§ã239ã¯çµæ§åªç§ãšèšãããšæããŸãã
åæ¯ã®å€§ãããèæ
®ããŠãçžå¯Ÿèª€å·®ã®åèšÃåæ¯ãã§ã©ã³ãã³ã°ãäœããšã
1äœã®568ã2äœã®897ã¯å€ãããŸãããã3äœã329ããããŠ4äœã239ãšãªããŸãã
çžå¯Ÿèª€å·®ã®åèšÃåæ¯ã®å
·äœå€(5äœãŸã§)ã¯
568 0.099882607730
897 0.222871229356
329 0.285662258393
239 0.348293385746
103 0.383956736568
ã®ããã«ãªã£ãŠããŠããããèŠãŠã568ã ãçªåºããŠããæãã§ãã
ã¡ãªã¿ã«åæ¯ã568ã®å Žåã®å¯Ÿæ°ã®è¿äŒŒå€ã¯
log2 â 171/568 â 0.30106
log3 â 271/568 â 0.47711
log5 â 397/568 â 0.69894
log7 â 480/568 â 0.84507
ãªã®ã§ããªãè¯ãè¿äŒŒã«ãªã£ãŠããŸããã
åæ¯ã568ã«ãªããããªçµåããé©åœã«æ¢ããŠã¿ããšã
(2400,2401),(4374,4375),(250000,250047)
ããåŒãç«ãŠãã°äžèšã®å€ã«ãªãããã§ãã
(æ€ç®ããŠããŸããã)
No.2157ãããã2024幎9æ15æ¥ 13:26
ãããŒã568 åªç§ã§ããã
ããã 250047 ã¯äººåããæµç³ã«ã¡ãã£ãšåºãŠããªãâŠâŠã
ãã£ã±ãæ¡æ°ãå€ããš 2 æ°ã®å·®ãå°ããã£ãŠãæ°ã«ãªããªããªã£ãŠããã®ã§ç²ŸåºŠäžããã£ãœãã§ããã
No.2159DD++2024幎9æ15æ¥ 14:35
(3)ã«ã€ããŠ
5log2 + log7 â 2log3 + 2log5
5log2 + log3 + 2log5 â 4log7
log2 + 7log3 â 4log5 + log7
ã
5log2 + log7 + a = 2log3 + 2log5
5log2 + log3 + 2log5 + b = 4log7
log2 + 7log3 + c = 4log5 + log7
ïŒa,b,cïŒ0ïŒ
ãšããŠèšç®ãããš
log2 = (72 - 27a - 5b - 7c) / 239
log3 = (114 + 17a + 12b - 31c) / 239
log5 = (167 + 27a + 5b + 7c) / 239
log7 = (202 - 16a + 59b - 13c) / 239
ãšãªããŸãããã®åŒãã
log2 ïŒ 72/239
log5 ïŒ 167/239
ã¯ãã ã¡ã«ããããŸãããlog3 ãš 114/239 ã®å€§å°é¢ä¿ã¯
17a + 12b - 31c ã®ç¬Šå·ã調ã¹ãªããšããããŸããã
ããã 17a + 12b - 31c ã®ç¬Šå·ã調ã¹ãããã«èšç®ãããš
17a + 12b - 31c = 239log3 - 114log10
ãšãªã£ãŠ 3^239 ãš 10^114 ã®å€§å°é¢ä¿ã調ã¹ãããšã«ãªããæ¬æ«è»¢åã§ãã
ãã£ãŠåæ§ã®æ¹æ³ã§äžçåŒã§äžäžããããããããã«ã¯
è¿äŒŒåŒãå€æ°çšæããŠããŸããŸå€§å°é¢ä¿ããããããšã«æåŸ
ããããããã
æãã€ããŸããããè¿œå ã®è¿äŒŒåŒãçšæããããšãããšæ¡æ°ãå¢ããŠ
æèšç®ã«äžåãã«ãªã£ãŠããŸãã®ã§ããšãããã
ããã®æ¹æ³ã§ã®äžçå·ã§ã®è©äŸ¡ã¯é£ããã
ãšèšã£ãŠããããšæããŸãã
No.2160ãããã2024幎9æ16æ¥ 02:52
> 17a + 12b - 31c ã®ç¬Šå·ã調ã¹ãªããšããããŸããã
ãªãã»ã©ãå·®åãå®æ°åããŠããŸãã°ããã£ãã®ã§ããã
é£ç«æ¹çšåŒã解ãæéã¯ãã£ããå¢ããŠããŸããŸãããã©ãã
æã§ãããªãéè¡åçšæããŠè§£ãã®ãäžçªæ©ãããªïŒ
{1/n - 1/(2*n^2)} log e < log{1+(1/n)} < {1/n} log e
ã䜿ãã°ãlog e ã¯æ¬ãåºããŠæŸçœ®ã§ããã®ã§ãa, b, c ã®ç·åçµåã®æ£è² è©äŸ¡ã¯ãªããšããªãã±ãŒã¹ãå€ããã«æããŸãã
(224, 225), (2400, 2401), (4374, 4375) ã®ã±ãŒã¹ã¯å®éããã§ãªããšããªãã¿ããã§ãã
No.2162DD++2024幎9æ16æ¥ 05:03
é·æã§ãã
(2)ã«ã€ããŠ
çŽ æ°2,3,5,7ã10æ¡ä»¥äžã§(2400,2401)ãã誀差çãå°ãããã®ã¯
以äžã®6åãããããŸããã§ããã巊端ã¯èª€å·®ç(倧ããæ¹ã®å€Ã·å°ããæ¹ã®å€ïŒ1)ã§ãã
0.000040616 78121827 78125000
0.000066758 645657712 645700815
0.000107377 3954653486 3955078125
0.000188000 250000 250047
0.000228624 4374 4375
0.000295397 184473632 184528125
0.000416667 2400 2401
78121827 = 3^13 * 7^2, 78125000 = 2^3 * 5^10, å·® = 3173 = 19 * 167
645657712 = 2^4 * 7^9, 645700815 = 3^17 * 5, å·® = 43103 (çŽ æ°)
3954653486 = 2 * 7^11, 3955078125 = 3^4 * 5^11, å·® = 424639 (çŽ æ°)
ããã䜿ã£ãŠ
13log3 + 2log7 = 3log2 + 10log5 (78121827, 78125000)
4log2 + 9log7 = 17log3 + log5 (645657712, 645700815)
log2 + 11log7 = 4log3 + 11log5 (3954653486, 3955078125)
log2 + log5 = 1
ã解ããšäžæ¬¡åŸå±ã§è§£ããŸããã§ããã
ãããããŠ
78121827 = 3^13 * 7^2, 78125000 = 2^3 * 5^10, å·® = 3173 = 19 * 167
645657712 = 2^4 * 7^9, 645700815 = 3^17 * 5, å·® = 43103 (çŽ æ°)
250000 = 2^4 * 5^6, 250047 = 3^6 * 7^3, å·® = 47 (çŽ æ°)
ããã䜿ã£ãŠ
13log3 + 2log7 = 3log2 + 10log5 (78121827, 78125000)
4log2 + 9log7 = 17log3 + log5 (645657712, 645700815)
4log2 + 6log5 = 6log3 + 3log7 (250000, 250047)
log2 + log5 = 1
ã解ããš
log2 = 171/568, log3 = 271/568, log5 = 397/568, log7 = 480/568
ããã¯èŠèŠãããããŸããã
ããããã®å€ã¯(2400,2401),(4374,4375),(250000,250047)
ãããåŸãããã®ã§ã¯ãªãããšæã£ãŠäžã§ãæ€ç®ããŠããŸããããšæžããã®ã
ãããããŠæ€ç®ããŠã¿ããšããªããš
5log2 + log3 + 2log5 = 4log7 (2400, 2401)
log2 + 7log3 = 4log5 + log7 (4374, 4375)
4log2 + 6log5 = 6log3 + 3log7 (250000, 250047)
log2 + log5 = 1
ã¯äžæ¬¡åŸå±ã§è§£ããŸããã§ãããçµæ§è§£ããªãå ŽåãåºãŠããã®ã§ããã
ããã§ã¯ããããçµåããå€ããŠè©Šãããšã«ããŸãã
13log3 + 2log7 = 3log2 + 10log5 (78121827, 78125000)
log2 + 11log7 = 4log3 + 11log5 (3954653486, 3955078125)
4log2 + 6log5 = 6log3 + 3log7 (250000, 250047)
log2 + log5 = 1
â log2 = 171/568, log3 = 271/568, log5 = 397/568, log7 = 480/568
4log2 + 9log7 = 17log3 + log5 (645657712, 645700815)
log2 + 11log7 = 4log3 + 11log5 (3954653486, 3955078125)
4log2 + 6log5 = 6log3 + 3log7 (250000, 250047)
log2 + log5 = 1
â log2 = 171/568, log3 = 271/568, log5 = 397/568, log7 = 480/568
13log3 + 2log7 = 3log2 + 10log5 (78121827, 78125000)
4log2 + 9log7 = 17log3 + log5 (645657712, 645700815)
log2 + 7log3 = 4log5 + log7 (4374, 4375)
log2 + log5 = 1
â log2 = 171/568, log3 = 271/568, log5 = 397/568, log7 = 480/568
13log3 + 2log7 = 3log2 + 10log5 (78121827, 78125000)
log2 + 11log7 = 4log3 + 11log5 (3954653486, 3955078125)
log2 + 7log3 = 4log5 + log7 (4374, 4375)
log2 + log5 = 1
â log2 = 171/568, log3 = 271/568, log5 = 397/568, log7 = 480/568
13log3 + 2log7 = 3log2 + 10log5 (78121827, 78125000)
4log2 + 6log5 = 6log3 + 3log7 (250000, 250047)
log2 + 7log3 = 4log5 + log7 (4374, 4375)
log2 + log5 = 1
â äžæ¬¡åŸå±
4log2 + 9log7 = 17log3 + log5 (645657712, 645700815)
4log2 + 6log5 = 6log3 + 3log7 (250000, 250047)
log2 + 7log3 = 4log5 + log7 (4374, 4375)
log2 + log5 = 1
â log2 = 171/568, log3 = 271/568, log5 = 397/568, log7 = 480/568
13log3 + 2log7 = 3log2 + 10log5 (78121827, 78125000)
log2 + 7log3 = 4log5 + log7 (4374, 4375)
5log2 + log3 + 2log5 = 4log7 (2400, 2401)
log2 + log5 = 1
â äžæ¬¡åŸå±
解ãåŸãããŠãåããã®ã°ããã§ãããã¡ãã£ãšç²ŸåºŠãè¯ããããã ãš
ããŸãå€ãããªãããã§ãã
ã§ã¯ããã«ç²ŸåºŠãè¯ããã®ãèŠã€ããŠè©ŠããŸãã
ãããã10æ¡ä»¥äžãã11æ¡ä»¥äžã12æ¡ä»¥äžãã»ã»ã»ãšå¢ãããŠããªããªãèŠã€ãããŸããã
ã15æ¡ä»¥äžããŸã§å¢ãããŠããã£ãš
0.000026141 205885750000000 205891132094649
0.000033563 281474976710656 281484423828125
ã®äºã€ãèŠã€ãããŸããã®ã§ããããš(78121827, 78125000)ã§è©ŠããŸãã
205885750000000 = 2^7 * 5^9 * 7^7, 205891132094649 = 3^30,
å·® = 5382094649 = 3673 * 1465313
281474976710656 = 2^48, 281484423828125 = 5^11 * 7^8,
å·® = 9447117469 (çŽ æ°)
7log2 + 9log5 + 7log7 = 30log3 (205885750000000, 205891132094649)
48log2 = 11log5 + 8log7 (281474976710656, 281484423828125)
13log3 + 2log7 = 3log2 + 10log5 (78121827, 78125000)
log2 + log5 = 1
â
log2 = 3125/10381 = 0.30103073 (çå€ 0.30103000)
log3 = 4953/10381 = 0.47712166 (çå€ 0.47712125)
log5 = 7256/10381 = 0.69896927 (çå€ 0.69897000)
log7 = 8773/10381 = 0.84510163 (çå€ 0.84509804)
ããããå°ã粟床ãäžãããŸããã
ã¡ãªã¿ã«ããäžæ¡äžã®
0.000007053 2251783932057135 2251799813685248
2251783932057135 = 3^13 * 5 * 7^10, 2251799813685248 = 2^51,
å·® = 15881628113 = 13 * 71 * 17206531
ã䜿ã£ãŠ
13log3 + log5 + 10log7 = 51log2 (2251783932057135, 2251799813685248)
7log2 + 9log5 + 7log7 = 30log3 (205885750000000, 205891132094649)
48log2 = 11log5 + 8log7 (281474976710656, 281484423828125)
log2 + log5 = 1
ãšããŠãäžãšåãåæ¯10381ã®å€ã«ãªããŸããã
ãšããããã§ã
䜿ãæ°åã®æ¡æ°ãããªãå¢ãããŠãçµæã®ç²ŸåºŠãããŸãäžãããªãããã
ãšããããšãããããŸããã
No.2167ãããã2024幎9æ16æ¥ 08:53
䜿ãæ¡æ°ãäžãã£ãŠãã2, 3, 5, 7 ã§äœããåææ°ã®å²åãæžãããšã§æã¡æ¶ãããŠããŸãã誀差çããªããªãå°ãããªããªããã§ããã
ãããªããšã11ã13ã®äœ¿çšãæ€èšããæ¹ã粟床äžãã«ã¯éèŠãªã®ããªïŒ
No.2168DD++2024幎9æ16æ¥ 13:02
ãŸãé·æã§ããããã§åœåã®èª²é¡ã¯ãšããããå®çµã
(4)
ã11ãè¿œå ããå Žåã
(1äžãŸã§)
0.000102041 9800 9801
0.000228624 4374 4375
0.000330688 3024 3025
0.000416667 2400 2401
0.001244444 5625 5632
9800 = 2^3 * 5^2 * 7^2, 9801 = 3^4 * 11^2
4374 = 2 * 3^7, 4375 = 5^4 * 7
3024 = 2^4 * 3^3 * 7, 3025 = 5^2 * 11^2
2400 = 2^5 * 3 * 5^2, 2401 = 7^4
3log2 + 2log5 + 2log7 = 4log3 + 2log11 (9800, 9801)
log2 + 7log3 = 4log5 + log7 (4374, 4375)
4log2 + 3log3 + log7 = 2log5 + 2log11 (3024, 3025)
5log2 + log3 + 2log5 = 4log7 (2400, 2401)
log2 + log5 = 1
â äžæ¬¡åŸå±
5625 = 3^2 * 5^4, 5632 = 2^9 * 11, å·® = 7
3log2 + 2log5 + 2log7 = 4log3 + 2log11 (9800, 9801)
log2 + 7log3 = 4log5 + log7 (4374, 4375)
5log2 + log3 + 2log5 = 4log7 (2400, 2401)
2log3 + 4log5 = 9log2 + log11 (5625, 5632)
log2 + log5 = 1
â
log2 = 270/897 = 0.301003 (çå€ 0.301030)
log3 = 428/897 = 0.477146 (çå€ 0.477121)
log5 = 627/897 = 0.698997 (çå€ 0.698970)
log7 = 758/897 = 0.845039 (çå€ 0.845098)
log11 = 934/897 = 1.041249 (çå€ 1.041393)
897ã¯äžã®æ¹ã§568ã«æ¬¡ãã§ç²ŸåºŠã®è¯ãåæ¯ã§ãã
(1åãŸã§)
0.000016089 3294172 3294225
0.000022158 67108864 67110351
0.000040616 78121827 78125000
0.000050668 14348180 14348907
3294172 = 2^2 * 7^7, 3294225 = 3^2 * 5^2 * 11^4, å·® = 53 (çŽ æ°)
67108864 = 2^26, 67110351 = 3 * 7^5 * 11^3, å·® = 1487 (çŽ æ°)
78121827 = 3^13 * 7^2, 78125000 = 2^3 * 5^10, å·® = 3173 = 19 * 167
14348180 = 2^2 * 5 * 7^2 * 11^4, 14348907 = 3^15, å·® = 727 (çŽ æ°)
2log2 + 7log7 = 2log3 + 2log5 + 4log11 (3294172, 3294225)
26log2 = log3 + 5log7 + 3log11 (67108864, 67110351)
13log3 + 2log7 = 3log2 + 10log5 (78121827, 78125000)
2log2 + log5 + 2log7 + 4log11 = 15log3 (14348180, 14348907)
log2 + log5 = 1
â
log2 = 6421/21330 = 0.3010314 (çå€ 0.3010300)
log3 = 10177/21330 = 0.4771214 (çå€ 0.4771213)
log5 = 14909/21330 = 0.6989686 (çå€ 0.6989700)
log7 = 18026/21330 = 0.8451008 (çå€ 0.8450980)
log11 = 22213/21330 = 1,0413971 (çå€ 1.0413927)
çµæ§ç²ŸåºŠãäžãããŸããã
ã13ãè¿œå ããå Žåã
(1äžãŸã§)
0.000102041 9800 9801
0.000150263 6655 6656
0.000228624 4374 4375
0.000236742 4224 4225
0.000244200 4095 4096
0.000330688 3024 3025
0.000416667 2400 2401
9800 = 2^3 * 5^2 * 7^2, 9801 = 3^4 * 11^2
6655 = 5 * 11^3, 6656 = 2^9 * 13
4374 = 2 * 3^7, 4375 = 5^4 * 7
4224 = 2^7 * 3 * 11, 4225 = 5^2 * 13^2
4095 = 3^2 * 5 * 7 * 13, 4096 = 2^12
3024 = 2^4 * 3^3 * 7, 3025 = 5^2 * 11^2
2400 = 2^5 * 3 * 5^2, 2401 = 7^4
3log2 + 2log5 + 2log7 = 4log3 + 2log11 (9800, 9801)
log5 + 3log11 = 9log2 + log13 (6655, 6656)
log2 + 7log3 = 4log5 + log7 (4374, 4375)
7log2 + log3 + log11 = 2log5 + 2log13 (4224, 4225)
2log3 + log5 + log7 + log13 = 12log2 (4095, 4096)
log2 + log5 = 1
â äžæ¬¡åŸå±
3log2 + 2log5 + 2log7 = 4log3 + 2log11 (9800, 9801)
log5 + 3log11 = 9log2 + log13 (6655, 6656)
log2 + 7log3 = 4log5 + log7 (4374, 4375)
7log2 + log3 + log11 = 2log5 + 2log13 (4224, 4225)
2log3 + log5 + log7 + log13 = 12log2 (4095, 4096)
4log2 + 3log3 + log7 = 2log5 + 2log11 (3024, 3025)
log2 + log5 = 1
â äžæ¬¡åŸå± (åŒãäžã€å€ããŠããªãäžæ¬¡åŸå±ãªã®ã§ä»ã®åŒãå¿
èŠ)
3log2 + 2log5 + 2log7 = 4log3 + 2log11 (9800, 9801)
log5 + 3log11 = 9log2 + log13 (6655, 6656)
log2 + 7log3 = 4log5 + log7 (4374, 4375)
7log2 + log3 + log11 = 2log5 + 2log13 (4224, 4225)
5log2 + log3 + 2log5 = 4log7 (2400, 2401)
log2 + log5 = 1
â
log2 = 270/897 = 0.301003 (çå€ 0.301030)
log3 = 428/897 = 0.477146 (çå€ 0.477121)
log5 = 627/897 = 0.698997 (çå€ 0.698970)
log7 = 758/897 = 0.845039 (çå€ 0.845098)
log11 = 934/897 = 1.041249 (çå€ 1.041393)
log13 = 999/897 = 1.113712 (çå€ 1.113943)
11ã ãè¿œå ãããšããšåã粟床ã§ãã
(1åãŸã§)
0.000007456 5767125 5767168
0.000008117 123200 123201
0.000013783 72772425 72773428
0.000015573 1990625 1990656
0.000016089 3294172 3294225
0.000018861 19140264 19140625
0.000022158 67108864 67110351
5767125 = 3 * 5^3 * 7 * 13^3, 5767168 = 2^19 * 11, å·® = 43 (çŽ æ°)
123200 = 2^6 * 5^2 * 7 * 11, 123201 = 3^6 * 13^2
72772425 = 3^7 * 5^2 * 11^3, 72773428 = 2^2 * 7^2 * 13^5, å·® = 1003 = 17 * 59
1990625 = 5^5 * 7^2 * 13, 1990656 = 2^13 * 3^5, å·® = 31 (çŽ æ°)
3294172 = 2^2 * 7^7, 3294225 = 3^2 * 5^2 * 11^4, å·® = 53 (çŽ æ°)
19140264 = 2^3 * 3^2 * 11^2 * 13^3, 19140625 = 5^8 * 7^2, å·® = 361 = 19^2
67108864 = 2^26, 67110351 = 3 * 7^5 * 11^3, å·® = 1487 (çŽ æ°)
log3 + 3log5 + log7 + 3log13 = 19log2 + log11 (5767125, 5767168)
6log2 + 2log5 + log7 + log11 = 6log3 + 2log13 (123200, 123201)
7log3 + 2log5 + 3log11 = 2log2 + 2log7 + 5log13 (72772425, 72773428)
5log5 + 2log7 + log13 = 13log2 + 5log3 (1990625, 1990656)
2log2 + 7log7 = 2log3 + 2log5 + 4log11 (3294172, 3294225)
log2 + log5 = 1
â äžæ¬¡åŸå±
log3 + 3log5 + log7 + 3log13 = 19log2 + log11 (5767125, 5767168)
6log2 + 2log5 + log7 + log11 = 6log3 + 2log13 (123200, 123201)
7log3 + 2log5 + 3log11 = 2log2 + 2log7 + 5log13 (72772425, 72773428)
2log2 + 7log7 = 2log3 + 2log5 + 4log11 (3294172, 3294225)
3log2 + 2log3 + 2log11 + 3log13 = 8log5 + 2log7 (19140264, 19140625)
log2 + log5 = 1
â
log2 = 6079/20194 = 0.3010300089 (çå€ 0.3010299957)
log3 = 9635/20194 = 0.4771219174 (çå€ 0.4771212547)
log5 = 14115/20194 = 0.6989699911 (çå€ 0.6989700043)
log7 = 17066/20194 = 0.8451025057 (çå€ 0.8450980400)
log11 = 21030/20194 = 1.0413984352 (çå€ 1.0413926852)
log13 = 22495/20194 = 1.1139447361 (çå€ 1.1139433523)
粟床ã¯11ã ãè¿œå ã®ãšããšåçšåºŠã§ãã
ïŒlog2ãšlog5ã¯ç²ŸåºŠãããã§ãããä»ã¯ãããŸã§è¯ããããŸããïŒ
ã29ãŸã§è¿œå ããå ŽåïŒçŽ æ°10åïŒã
(1åãŸã§)
0.000000010 96059600 96059601
0.000000055 18085704 18085705
0.000000075 26578123 26578125
0.000000084 11859210 11859211
0.000000095 10556000 10556001
0.000000121 8268799 8268800
0.000000155 12901779 12901781
0.000000169 5909760 5909761
0.000000194 5142500 5142501
0.000000244 4096575 4096576
0.000000244 4090624 4090625
0.000000250 4004000 4004001
0.000000315 22194425 22194432
0.000000365 13697019 13697024
0.000000365 90312467 90312500
0.000000371 2697695 2697696
0.000000485 8254125 8254129
0.000000489 88012332 88012375
0.000000494 2023424 2023425
0.000000520 90312453 90312500
0.000000540 1852200 1852201
0.000000560 67874587 67874625
0.000000569 75557027 75557070
0.000000587 46000759 46000786
96059600 = 2^4 * 5^2 * 7^2 * 13^2 * 29, 96059601 = 3^8 * 11^4
18085704 = 2^3 * 3 * 7^3 * 13^3, 18085705 = 5 * 11 * 17 * 23 * 29^2
26578123 = 11 * 13^2 * 17 * 29^2, 26578125 = 3^5 * 5^6 * 7
11859210 = 2 * 3^4 * 5 * 11^4, 11859211 = 7 * 13 * 19^4
10556000 = 2^5 * 5^3 * 7 * 13 * 29, 10556001 = 3^4 * 19^4
8268799 = 7^2 * 11 * 23^2 * 29, 8268800 = 2^10 * 5^2 * 17 * 19
12901779 = 3^2 * 11 * 19^4, 12901781 = 23^2 * 29^3
5909760 = 2^8 * 3^5 * 5 * 19, 5909761 = 11^2 * 13^2 * 17^2
5142500 = 2^2 * 5^4 * 11^2 * 17, 5142501 = 3^3 * 7^2 * 13^2 * 23
4096575 = 3^4 * 5^2 * 7 * 17^2, 4096576 = 2^6 * 11^2 * 23^2
4090624 = 2^8 * 19 * 29^2, 4090625 = 5^5 * 7 * 11 * 17
4004000 = 2^5 * 5^3 * 7 * 11 * 13, 4004001 = 3^2 * 23^2 * 29^2
22194425 = 5^2 * 11^3 * 23 * 29, 22194432 = 2^8 * 3^3 * 13^2 * 19
13697019 = 3^4 * 7^3 * 17 * 29, 13697024 = 2^16 * 11 * 19
90312467 = 7 * 23^2 * 29^3, 90312500 = 2^2 * 5^7 * 17^2
2697695 = 5 * 7^3 * 11^2 * 13, 2697696 = 2^5 * 3^2 * 17 * 19 * 29
8254125 = 3^2 * 5^3 * 11 * 23 * 29, 8254129 = 13^4 * 17^2
88012332 = 2^2 * 3^4 * 17 * 19 * 29^2, 88012375 = 5^3 * 11^3 * 23^2
2023424 = 2^13 * 13 * 19, 2023425 = 3^2 * 5^2 * 17 * 23^2
90312453 = 3^2 * 7 * 11 * 19^4, 90312500 = 2^2 * 5^7 * 17^2
1852200 = 2^3 * 3^3 * 5^2 * 7^3, 1852201 = 13 * 17^3 * 29
67874587 = 11^2 * 23 * 29^3, 67874625 = 3^3 * 5^3 * 7 * 13^2 * 17
75557027 = 7 * 13^3 * 17^3, 75557070 = 2 * 3^3 * 5 * 23^4
46000759 = 7^6 * 17 * 23, 46000786 = 2 * 13^3 * 19^2 * 29
4log2 + 2log5 + 2log7 + 2log13 + log29 = 8log3 + 4log11 (96059600, 96059601)
3log2 + log3 + 3log7 + 3log13 = log5 + log11 + log17 + log23 + 2log29 (18085704, 18085705)
log11 + 2log13 + log17 + 2log29 = 5log3 + 6log5 + log7 (26578123, 26578125)
log2 + 4log3 + log5 + 4log11 = log7 + log13 + 4log19 (11859210, 11859211)
2log7 + log11 + 2log23 + log29 = 10log2 + 2log5 + log17 + log19 (8268799, 8268800)
2log3 + log11 + 4log19 = 2log23 + 3log29 (12901779, 12901781)
8log2 + 5log3 + log5 + log19 = 2log11 + 2log13 + 2log17 (5909760, 5909761)
4log3 + 2log5 + log7 + 2log17 = 6log2 + 2log11 + 2log23 (4096575, 4096576)
6log7 + log17 + log23 = log2 + 3log13 + 2log19 + log29 (46000759, 46000786)
log2 + log5 = 1
â
log2 = 360565/1197771 = 0.3010299966 (çå€ 0.3010299957)
log3 = 571482/1197771 = 0.4771212527 (çå€ 0.4771212547)
log5 = 837206/1197771 = 0.6989700034 (çå€ 0.6989700043)
log7 = 1012234/1197771 = 0.8450981031 (çå€ 0.8450980400)
log11 = 1247350/1197771 = 1.0413927203 (çå€ 1.0413926852)
log13 = 1334249/1197771 = 1.1139433164 (çå€ 1.1139433523)
log17 = 1473796/1197771 = 1.2304488922 (çå€ 1.2304489214)
log19 = 1531654/1197771 = 1.2787536182 (çå€ 1.2787536010)
log23 = 1631038/1197771 = 1.3617277426 (çå€ 1.3617278360)
log29 = 1751618/1197771 = 1.4623980711 (çå€ 1.4623979979)
åæ¯ã®1197771ã¯10000000ãŸã§ã§æã誀差ãå°ãªããªãå€ã§ãã
# 誀差ã®å°ãªãé ã«9å+(log2+log5=1)ã ãšäžæ¬¡åŸå±ã«ãªããŸãã
# ãããã1åãã€è¿œå ããŠãã£ãŠããã°ããäžæ¬¡åŸå±ã®ãŸãŸã§ã
# 24åç®ã®(46000759,46000786)ã®åŒãè¿œå ããŠããããäžæ¬¡ç¬ç«ã«ãªããŸãã
# ãããŠããããéé ã«æ¶ããè¡ãæ¶ããŠãã£ãŠ10è¡ã«æžãããã®ã
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No.2170ãããã2024幎9æ16æ¥ 14:15
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No.2175DD++2024幎9æ17æ¥ 02:05
ã¯ãœæãå€äŒã¿ã«è±èªã®è£ç¿ãåè¬ãã«ç»æ ¡ããŠããããšãæãåºããŸããã
ããŸã«ã¯è±æã§ã
There are eight gold coins, one of which is a forgery containing radioactive material. The task is to identify this forgery using a series of measurements conducted by technicians with Geiger counters. The problem is structured as follows:
1. Coins: There are 8 gold coins, numbered 1 through 8. Exactly one coin is a forgery.
2. Forgery Characteristics: The forged coin contains radioactive material, detectable by a Geiger counter.
3. Technicians: There are 10 technicians available to perform measurements.
4. Measurement Process:
Each technician selects a subset of the 8 coins for measurement.
The technician uses a Geiger counter to test the selected coins simultaneously.
The Geiger counter reacts if and only if the forgery is among the selected coins.
Only the technician operating the device knows the result of the measurement.
5. Measurement Constraints:
Each technician performs exactly one measurement.
A total of 10 measurements are conducted.
6. Reporting:
After each measurement, the technician reports either "positive" (radioactivity detected) or "negative" (no radioactivity detected).
7. Reliability Issue: Up to two technicians may provide unreliable reports, either due to intentional deception or unintentional error.
8. Objective: Identify the forged coin with certainty, despite the possibility of up to two unreliable reports.
Challenge
The challenge is to design a measurement strategy and analysis algorithm that can definitively identify the forged coin, given these constraints and potential inaccuracies in the technicians' reports.
No.2129Dengan kesaktian Indukmu2024幎9æ8æ¥ 00:09
10人ãããç°¡åã ãšããŠã9人解ãã§ãããã§ã§ããªãâŠâŠ
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"000 000 000 ", 0,0,0,
"110 011 101 ", 6,3,5,
"111 110 001 ", 7,6,1,
"010 100 110 ", 2,4,6,
"011 001 010 ", 3,1,2,
"100 111 011 ", 4,7,3,
"001 101 100 ", 1,5,4,
"101 010 111 ", 5,2,7
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"010 100 110 ", 2,4,6,
"011 001 010 ", 3,1,2,
"001 101 100 ", 1,5,4,
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No.2135Dengan kesaktian Indukmu2024幎9æ10æ¥ 00:47
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" 100 111 010 110 001 011 101 "
æ°ç ã§ãã®ã§ãæåŸå°Ÿã® 101 ã®æ¬¡ã«ã¯ å
é ã® 100 ã«ã€ãªããããšãšããŸãã
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onst codes = [
"100 111 010 ", // XORçµæ 001
"111 010 110 ", // XORçµæ 011
"010 110 001 ", // XORçµæ 101
"110 001 011 ", // XORçµæ 100
"001 011 101 ", // XORçµæ 111
"011 101 100 ", // XORçµæ 010
"101 100 111 ", // XORçµæ 110
];
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z = 000
ãšããŸãããŸãã
a = 100
b = 111
c = 010
d = 110
e = 001
f = 011
g = 101
ãšããŸãã
ãã®ãšã以äžã®æ§è³ªããããŸãã(ããã§ã¯âãæä»çè«çåãšããŸãã)
e = aâbâc
f = bâcâd
g = câdâe
a = dâeâf
b = eâfâg
c = fâgâa
d = gâaâb
ãâ»ãµã€ã¯ãªãã¯ãšãªã£ãŠããŸããã
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E = aâ¥bâ¥câ¥p(c)
F = bâ¥câ¥dâ¥p(d)
G = câ¥dâ¥eâ¥p(e)
A = dâ¥eâ¥fâ¥p(f)
B = eâ¥fâ¥gâ¥p(g)
C = fâ¥gâ¥aâ¥p(a)
D = gâ¥aâ¥bâ¥p(b)
Z = zâ¥zâ¥zâ¥p(z)
ãšããŸãã
å
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E=100â¥111â¥010â¥1 âe=001
F=111â¥010â¥110â¥0 âf=011
G=010â¥110â¥001â¥1 âg=101
A=110â¥001â¥011â¥0 âa=100
B=001â¥011â¥101â¥0 âb=111
C=011â¥101â¥100â¥1 âc=010
D=101â¥100â¥111â¥1 âd=110
Z=000â¥000â¥000â¥0 âz=000
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0,0,0,0,0,0,0,0,0,0
1,0,0,1,1,0,0,1,1,1
0,1,0,1,0,1,0,1,1,0
1,1,0,0,1,1,0,0,0,1
0,0,1,1,0,0,1,1,0,1
1,0,1,0,1,0,1,0,1,0
0,1,1,0,0,1,1,0,1,1
1,1,1,1,1,1,1,1,0,0
ãšããã³ãŒããèããããŸãã10人ã®æè¡è
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AãšEã¯ã1,3,5,7çªã®é貚ãéžæããŠæž¬å®ã
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BãšFã¯ã2,3,6,7çªã®é貚ãéžæããŠæž¬å®ã
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CãšGã¯ã4,5,6,7çªã®é貚ãéžæããŠæž¬å®ã
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DãšHã¯ã1,2,4,7çªã®é貚ãæ€åºããŠæž¬å®ã
æè¡è
Iã¯1,2,5,6çªã®é貚ãéžæããŠæž¬å®ã
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Jã¯1,3,4,6çªã®é貚ãéžæããŠæž¬å®ããããšã«ããŠã
åæè¡è
ã®éœæ§ã®å ±åãã1ããé°æ§ã®å ±åãã0ãã§è¡šããšã
ãã¹ãŠã®å ±åãæ£ããã£ããšãããšã以äžã®8éãã®çµã¿åãã
ããã£ãŠãããããã1ïœ8çªã®ãããããåœé åã§ããå Žå
ãšå¯Ÿå¿ããŸãã
-|A,B,C,D,E,F,G,H,I,J
0|0,0,0,0,0,0,0,0,0,0 â8çªãåœé å
1|1,0,0,1,1,0,0,1,1,1 â1çªãåœé å
2|0,1,0,1,0,1,0,1,1,0 â2çªãåœé å
3|1,1,0,0,1,1,0,0,0,1 â3çªãåœé å
4|0,0,1,1,0,0,1,1,0,1 â4çªãåœé å
5|1,0,1,0,1,0,1,0,1,0 â5çªãåœé å
6|0,1,1,0,0,1,1,0,1,1 â6çªãåœé å
7|1,1,1,1,1,1,1,1,0,0 â7çªãåœé å
10人ã®æè¡è
ã®å ±åã®ãã¡2人ã®å ±åã誀ãã§ããå Žåã¯ã
10ãããã®ãã¡2ãããã誀ãã§ããå Žåã«çžåœããŸããã
äžèšã®8ç¶æ
ã¯æå°ããã³ã°è·é¢ã5ãªã®ã§ãããã5ããã
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ã 10 â 21 人ã«å¢å¡ããããšãã«ãæ倧 5人 ãŸã§ã®ç¯å²ã§èª€ã£ãå ±åãããŠããŠãåœé貚ãçªãæ¢ããããšãã§ãããšå€æããŸããã
"100 111 010 110 001 011 101",
"111 010 110 001 011 101 100",
"010 110 001 011 101 100 111",
"110 001 011 101 100 111 010",
"001 011 101 100 111 010 110",
"011 101 100 111 010 110 001",
"101 100 111 010 110 001 011",
"000 000 000 000 000 000 000",
Minimum Hamming Distance: 12
ãªããäžèšã§ã¯ 21 äžã«ã誀ããªãæè¡è
ã1äººå ±åããã¹ãããŠã倧äžå€«ã§ãã
1人ãã¹ããã€ïŒäººèª€ãå ±åã§ãã
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Minimum Hamming Distance: 11
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A,B,C,D,E,F,G,H,I,J,K,L,M
-------------------------
0,0,0,0,0,0,0,0,0,0,0,0,0
1,0,0,1,1,0,1,0,0,1,1,0,1
0,1,0,1,0,1,0,1,0,1,0,1,1
1,1,0,0,1,1,1,1,0,0,1,1,0
0,0,1,0,1,1,0,0,1,0,1,1,1
1,0,1,1,0,1,1,0,1,1,0,1,0
0,1,1,1,1,0,0,1,1,1,1,0,0
1,1,1,0,0,0,1,1,1,0,0,0,1
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BãšHã¯ã2,3,6,7çªã®é貚ãéžæããŠæž¬å®ã
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CãšIã¯ã4,5,6,7çªã®é貚ãéžæããŠæž¬å®ã
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DãšJã¯ã1,2,5,6çªã®é貚ãéžæããŠæž¬å®ã
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EãšKã¯ã1,3,4,6çªã®é貚ãéžæããŠæž¬å®ã
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A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q
---------------------------------
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
1,0,0,1,0,0,1,0,0,1,1,1,0,1,1,1,0
0,1,0,0,1,0,0,1,0,1,1,0,1,1,1,0,1
1,1,0,1,1,0,1,1,0,0,0,1,1,0,0,1,1
0,0,1,0,0,1,0,0,1,1,0,1,1,1,0,1,1
1,0,1,1,0,1,1,0,1,0,1,0,1,0,1,0,1
0,1,1,0,1,1,0,1,1,0,1,1,0,0,1,1,0
1,1,1,1,1,1,1,1,1,1,0,0,0,1,0,0,0
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AãšDãšGã¯ã1,3,5,7çªã®é貚ãéžæããŠæž¬å®ã
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BãšEãšHã¯ã2,3,6,7çªã®é貚ãéžæããŠæž¬å®ã
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CãšFãšIã¯ã4,5,6,7çªã®é貚ãéžæããŠæž¬å®ã
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JãšNã¯ã1,2,4,7çªã®é貚ãæ€åºããŠæž¬å®ã
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KãšOã¯ã1,2,5,6çªã®é貚ãéžæããŠæž¬å®ã
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LãšPã¯ã1,3,4,6çªã®é貚ãéžæããŠæž¬å®ã
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MãšQã¯ã2,3,4,5çªã®é貚ãéžæããŠæž¬å®ããããšã«ããã°ã
æ倧ã§4人ãŸã§ã誀ãã®å ±åãããŠã8æã®é貚ãã1æã®åœé åãç¹å®ã§ããŸãã
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A,B,C,D,E,F
-----------
0,0,0,0,0,0
1,0,0,1,1,0
0,1,0,1,0,1
1,1,0,0,1,1
0,0,1,0,1,1
1,0,1,1,0,1
0,1,1,1,1,0
1,1,1,0,0,0
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Bã¯ã2,3,6,7çªã®é貚ãéžæããŠæž¬å®ã
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Cã¯ã4,5,6,7çªã®é貚ãéžæããŠæž¬å®ã
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Dã¯ã1,2,5,6çªã®é貚ãéžæããŠæž¬å®ã
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Eã¯ã1,3,4,6çªã®é貚ãéžæããŠæž¬å®ã
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Fã¯ã2,3,4,5çªã®é貚ãéžæããŠæž¬å®ããããšã«ããã°ã
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DD++ ããããã£ããã£ãŠããã
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ååã§ã¯â ãšâ¡ãšâ¢ãšã®ã©ãããçºçããŸããã©ããçºçãããã¯æã
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8æã®é貚ãïŒæã¥ã€ãã¢ã«ããŠèš4ãã¢ãšããŸãã(A,a), (B,b),(C ,c ),(D,d)ãšåä»ããŸãããããã¯(X,x)ã®ããã«ãŸãšããŠæžãããšããããŸãã
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[
"0 0 0 0 0 0" ,//(A,a)
"0 0 1 1 1 1" ,//(B,b)
"1 1 0 0 1 1" ,//(C,c)
"1 1 1 1 0 0" ,//(D,d)
]
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-|A,B,C,D,E,F,G,H,I,J,K
-----------------------
0|0,0,0,0,0,0,0,0,0,0,0â16çªãåœé å
1|1,0,0,0,1,1,1,0,0,1,0â1çªãåœé å
2|0,1,0,0,1,1,0,1,1,0,1â2çªãåœé å
3|1,1,0,0,0,0,1,1,1,1,1â3çªãåœé å
4|0,0,1,0,1,0,1,1,1,0,0â4çªãåœé å
5|1,0,1,0,0,1,0,1,1,1,0â5çªãåœé å
6|0,1,1,0,0,1,1,0,0,0,1â6çªãåœé å
7|1,1,1,0,1,0,0,0,0,1,1â7çªãåœé å
8|0,0,0,1,0,1,1,0,1,1,1â8çªãåœé å
9|1,0,0,1,1,0,0,0,1,0,1â9çªãåœé å
a|0,1,0,1,1,0,1,1,0,1,0â10çªãåœé å
b|1,1,0,1,0,1,0,1,0,0,0â11çªãåœé å
c|0,0,1,1,1,1,0,1,0,1,1â12çªãåœé å
d|1,0,1,1,0,0,1,1,0,0,1â13çªãåœé å
e|0,1,1,1,0,0,0,0,1,1,0â14çªãåœé å
f|1,1,1,1,1,1,1,0,1,0,0â15çªãåœé å
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Gã¯ã1,3,4,6,8,10,13,15çªã®é貚ãéžæããŠæž¬å®ã
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