←1
23456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841
…842843844845846…8478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991,0001,0011,0021,0031,0041,0051,0061,0071,0081,0091,0101,0111,0121,0131,0141,0151,0161,0171,0181,0191,0201,0211,0221,0231,0241,0251,0261,0271,0281,0291,0301,0311,0321,0331,0341,0351,0361,0371,0381,0391,0401,0411,0421,0431,0441,0451,0461,0471,0481,0491,0501,0511,0521,0531,0541,0551,0561,0571,0581,0591,0601,0611,0621,0631,0641,0651,0661,0671,0681,0691,0701,0711,0721,0731,0741,0751,0761,0771,0781,0791,0801,0811,0821,0831,0841,0851,0861,0871,0881,0891,0901,0911,0921,0931,0941,0951,0961,0971,0981,0991,1001,1011,1021,1031,1041,1051,1061,1071,1081,1091,1101,1111,1121,1131,1141,1151,1161,1171,1181,1191,1201,1211,1221,1231,1241,1251,1261,1271,1281,1291,1301,1311,1321,1331,1341,1351,1361,1371,1381,1391,1401,1411,1421,1431,1441,1451,1461,1471,1481,1491,1501,1511,1521,1531,1541,1551,1561,1571,1581,1591,1601,1611,1621,1631,1641,1651,1661,1671,1681,1691,1701,1711,1721,1731,1741,1751,1761,1771,1781,1791,1801,1811,1821,1831,1841,1851,1861,1871,1881,1891,1901,1911,1921,1931,1941,1951,1961,1971,1981,1991,2001,2011,2021,2031,2041,2051,2061,2071,2081,2091,2101,2111,2121,2131,2141,2151,2161,2171,2181,2191,2201,2211,2221,2231,2241,2251,2261,2271,2281,2291,2301,2311,2321,2331,2341,2351,2361,2371,2381,2391,2401,2411,2421,2431,2441,2451,2461,2471,2481,2491,2501,2511,252
1253→