摘要: # Codeforces Round 875 (Div. 2) A~D ### A. Twin Permutations 构造$a[i]+b[i]=n+1$ ```c++ void work() { int n; cin >> n; rep (i, 1, n) { int x; cin >> x; 阅读全文
posted @ 2023-05-29 09:34 xhy666 阅读(253) 评论(0) 推荐(0)