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全部文章（共27篇）

题解 | 【模板】拓扑排序

#include<bits/stdc++.h> using namespace std; const int N=2e5+5; int n,m; int b[N]; int vis[N]; int bel[N]; int cnt; vector<int>V[N]; ...

2026-01-16

0 11

题解 | many sum

#include <iostream> using namespace std; const int N=2e6+5; int n,m; int a[N]; int b[N]; int main() { scanf("%d%d%d",&n,&a...

2026-01-14

0 6

题解 | 牛牛喜欢字符串

#include <iostream> using namespace std; const int N=1e6+5; int n,k; int cnt[N][26]; int main() { scanf("%d%d",&n,&k);...

2026-01-09

0 10

题解 | 明日DISCO

#include <iostream> using namespace std; const int N=505; int n; int a[N][N]; int dx[4]={1,0,0,-1}; int dy[4]={0,1,-1,0}; int main() { s...

2026-01-07

0 10

题解 | 统计个数

#include<bits/stdc++.h> using namespace std; const int N=205; int T; int n,m; int g[N][N]; inline int gcd(int x,int y) { if(y==0) return...

2026-01-06

0 18

题解 | 构造数列

#include<bits/stdc++.h> using namespace std; const int N=2e5+5; int T; int n,a[N]; int main() { scanf("%d",&T); while(...

2026-01-04

0 18

题解 | 相助(easy)

#include<bits/stdc++.h> using namespace std; const int N=5e5+5; int n; int a[N]; int main() { scanf("%d",&n); for(int ...

2026-01-03

0 20

题解 | 华华给月月准备礼物

#include<bits/stdc++.h> #define int long long using namespace std; const int N=2e5+5; int n,k; int l[N]; inline int work(int x) { int re...

2026-01-02

0 19

题解 | 先序遍历、中序遍历和后序遍历

#include<bits/stdc++.h> using namespace std; const int N=1e5+5; int n; int fa[N],son[N][2],cnt[N]; inline void work1(int x) { printf(&qu...

2026-01-01

0 23

题解 | 小红的01串

#include<bits/stdc++.h> using namespace std; int q; string s; int main() { scanf("%d",&q); while(q--) { cin...

2025-12-31

0 18