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链接：http://codeforces.com/problemset/problem/540/D题目大意：这个岛上有三种生物 r石头 s剪刀 p布求最后只剩一种生物的概率用dp[i][j][k]表示概率石头和剪刀相遇的概率是p=i*j/(i*j+j*k+k*i),剪刀会被吃掉 所以dp[i][j... 阅读全文
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链接：http://codeforces.com/problemset/problem/540/CYou play a computer game. Your character stands on some level of a multilevel ice cave. In order to m... 阅读全文
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B. School Markstime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputLittle Vova studies programming i... 阅读全文