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Codeforces Round 874 (Div. 3) A - Musical Puzzle 思路:记录两个长度字符串的种数 #include<bits/stdc++.h> using namespace std; typedef pair<int,int>PII; typedef pair<s 阅读全文
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Educational Codeforces Round 149 (Rated for Div. 2) A - Grasshopper on a Line 思路:只有两种情况,x整除k时为x-1和1,否则为x void solve() { int x, k; cin >> x >> k; if (x 阅读全文