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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 7

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 22

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 14

题解 | 连分数

#include <bits/stdc++.h> using namespace std; typedef long long ll; void dfs(int p,int q) { int a = p/q; int r = p%q; p = r; ...

2026-03-08

0 19

题解 | 不点两面(hard version)

#include <bits/stdc++.h> using namespace std; const int N=3e5+10; const int mod = 998244353; typedef long long ll; typedef unsigned long long ul...

2026-03-06

0 15

题解 | 恶魔果实

#include <bits/stdc++.h> using namespace std; const int N=1e6+10; const int mod = 1e4+7; typedef long long ll; typedef unsigned long long ull; l...

2026-03-02

0 26

题解 | 01序列

#include <bits/stdc++.h> using namespace std; int main() { int m; cin>>m; vector<int>a(m+1); for(int i=1;i<=m;i++...

2026-02-21

0 25

题解 | 中位数之和

#include <bits/stdc++.h> using namespace std; typedef long long ll; const int N = 6e5+10; const int mod = 1e9+7; ll a[N]; int n,k; ll fac[N]; l...

2026-02-13

0 43

题解 | 小红的二叉树

#include <bits/stdc++.h> using namespace std; typedef long long ll; const ll mod = 1e9+7; ll qpow(ll a,ll b,ll p) { ll res =1; for(;b;b...

2026-02-10

0 36

题解 | 幂次进近

#include <bits/stdc++.h> using namespace std; const int N=3e5+10; const int mod = 998244353; typedef long long ll; typedef unsigned long long ul...

2026-02-04

1 36