摘要: A. Sigma Cubes code #include<bits/stdc++.h> using namespace std; int n; int main(){ cin >> n; int ans = 0; for(int i = 1; i <= n; ++i){ ans += ((i&1)? 阅读全文
posted @ 2025-09-28 16:04 ricky_lin 阅读(38) 评论(0) 推荐(0)