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题解 | 前缀平方和序列

#include <bits/stdc++.h> using namespace std; const int N=1e3+10; const int mod = 1e9+7; typedef long long ll; typedef unsigned long long ull; c...

2026-05-03

0 6

题解 | 剪纸游戏

#include <bits/stdc++.h> using namespace std; const int N=1e3+10; const int mod = 998244353; typedef long long ll; typedef unsigned long long ul...

2026-05-02

0 6

题解 | 猫猫与数学

#include <bits/stdc++.h> #include <cstdio> using namespace std; typedef long long ll; const ll INF = 1e18; int main() { ll a,b; ...

2026-04-29

0 11

题解 | 丛林木马

#include <bits/stdc++.h> using namespace std; const int N=2e6+10; const int mod = 998244353; typedef long long ll; typedef unsigned long long ul...

2026-04-24

0 22

题解 | 穷哈哈~

#include <bits/stdc++.h> using namespace std; int main() { int n; string s; cin>>n; cin>>s; int cnt = 0; in...

2026-04-20

0 13

题解 | 小美的01串翻转

#include <bits/stdc++.h> using namespace std; typedef long long ll; string s; int n; int main() { ios::sync_with_stdio(false); cin.ti...

2026-04-14

0 27

题解 | 小红开宝箱

#include <bits/stdc++.h> using namespace std; typedef long long ll; const int N = 2e5+10; vector<ll>e[N]; int match[N]; bool vis[N]; bool...

2026-03-26

0 38

题解 | 小红的连续段

#include <bits/stdc++.h> using namespace std; const int mod = 1e9+7; const int N = 2e3+10; typedef long long ll; ll fac[N]; ll inv[N]; ll qpow(...

2026-03-19

0 34

题解 | 显生之宙

#include <bits/stdc++.h> using namespace std; typedef long long ll; const int N = 6e5+10...

2026-03-13

0 53

题解 | 小苯的蓄水池（hard）

#include <bits/stdc++.h> using namespace std; const int N = 2e5+10; double a[N]; int fa[N]; int sz[N]; double avg[N]; int n,m; int find(int x)...

2026-03-09

0 43