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https://www.patest.cn/contests/pat-a-practise/1007 Given a sequence of K integers { N1, N2, ..., NK }. A continuous subsequence is defined to be { Ni, 阅读全文
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0.模板 https://www.luogu.org/problem/lists?name=%E6%A8%A1%E6%9D%BF 1.判数字回文 bool check(ll x) { ll t = x, y = 0; while (t) { y = y * 10 + t % 10; t /= 10; 阅读全文
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https://www.patest.cn/contests/pat-a-practise/1131 In the big cities, the subway systems always look so complex to the visitors. To give you some sens 阅读全文
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http://codeforces.com/problemset/problem/946/C You are given a string s consisting of |s| small english letters. In one move you can replace any chara 阅读全文
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http://codeforces.com/problemset/problem/950/B Hacker Zhorik wants to decipher two secret messages he intercepted yesterday. Yeah message is a sequenc 阅读全文