摘要: 题目来源:https://www.luogu.com.cn/problem/P1955 ` define int long long int p[1000010]; bool haveans = 0; const int MOD = 998823; int find(int x) { if (x ! 阅读全文
posted @ 2025-07-14 15:47 yubai111 阅读(57) 评论(0) 推荐(0)