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摘要：Yuhao and a Parenthesis time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Yuhao and a Pare 阅读全文

摘要：http://m3.codeforces.com/contest/1097/problem/A Gennady and a Card Game time limit per test 1 second memory limit per test 256 megabytes input standar 阅读全文

摘要：https://codeforces.com/contest/1097/problem/A Petr and a Combination Lock time limit per test 1 second memory limit per test 256 megabytes input stand 阅读全文