摘要：
Educational Codeforces Round 29 A. Quasi-palindrome 把后缀$0$去掉之后看一下串翻转之后和原串是否相同即可 view code #pragma GCC optimize("O3") #pragma GCC optimize("Ofast,no-st 阅读全文
摘要：
Educational Codeforces Round 28 A. Curriculum Vitae 找分界点，前面全取$0$后面全取$1$即可 view code #pragma GCC optimize("O3") #pragma GCC optimize("Ofast,no-stack-pr 阅读全文