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Your little brother has just learnt to write one, two and three, in English. He has written a lot of those words in a paper, your task is to recognize... 阅读全文
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1881. Long problem statementTime limit: 0.5 secondMemory limit: 64 MBWhile Fedya was writing the statement of the problem GOV Chronicles, he realized... 阅读全文
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1880. Psych Up's EigenvaluesTime limit: 0.5 secondMemory limit: 64 MBAt one of the contests at the Petrozavodsk Training Camp, players of the Psych Up... 阅读全文
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1877. Bicycle CodesTime limit: 0.5 secondMemory limit: 64 MBDen has two four-digit combination locks for protecting his bicycle from thieves. Every ev... 阅读全文
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1876. Centipede's MorningTime limit: 0.5 secondMemory limit: 64 MBA centipede has 40 left feet and 40 right feet. It keeps a left slippers and b right... 阅读全文
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唔 神题一道 大家感受一下1873. GOV ChroniclesTime limit: 0.5 secondMemory limit: 64 MBA chilly autumn night. Well wrapped up in a coat, a man is rapidly walking a... 阅读全文
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Not so MobileBefore being an ubiquous communications gadget, a mobile was just a structure made of strings and wires suspending colourfull things. Th... 阅读全文
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Dropping BallsA number of K balls are dropped one by one from the root of a fully binary tree structure FBT. Each time the ball being dropped first v... 阅读全文
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zoj初学者题：1001 1037 1048 1049 1051 1067 1115 1151 1201 1205 1216 1240 1241 1242 1251 1292 1331 1334 1337 1338 1350 1365 1382 1383 1394 1402 1405 1414 14... 阅读全文
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E. DivisorsBizon the Champion isn't just friendly, he also is a rigorous coder.Let's define function f(a), where a is a sequence of integers. Function... 阅读全文
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Bizon the Champion isn't just charming, he also is very smart.While some of us were learning the multiplication table, Bizon the Champion had fun in h... 阅读全文
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C. Painting FenceBizon the Champion isn't just attentive, he also is very hardworking.Bizon the Champion decided to paint his old fence his favorite c... 阅读全文
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B. Suffix StructuresBizon the Champion isn't just a bison. He also is a favorite of the "Bizons" team.At a competition the "Bizons" got the following ... 阅读全文
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A. RewardsBizon the Champion is called the Champion for a reason.Bizon the Champion has recently got a present — a new glass cupboard with n shelves a... 阅读全文