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题解 | 切题之路

#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...

2026-01-11

0 34

题解 | 牛牛喜欢字符串

#include <bits/stdc++.h> using namespace std; int n,k; int cnt[27]; int main() { ios::sync_with_stdio(false); cin.tie(0); cin>&g...

2026-01-09

3 31

题解 | 区间取反与区间数一

#include <bits/stdc++.h> using namespace std; typedef long long ll; const int N = 2e6+10; int a[N]; int sum[N]; bool chg[N]; void up(int i) { ...

2026-01-08

1 31

题解 | 明日DISCO

#include <bits/stdc++.h> using namespace std; const int N = 1e3+10; int a[N][N]; int dir[4][2]={1,0,-1,0,0,-1,0,1}; int main() { ios::sync...

2026-01-07

1 29

题解 | 小美打怪

#include <bits/stdc++.h> using namespace std; const int N = 3e5+10; struct Node { int a,h; }nd[N]; int dp[N]; bool cmp(Node a,Node b) {...

2026-01-05

1 39

题解 | 构造数列

#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...

2026-01-04

1 47

题解 | 相助(easy)

#include <bits/stdc++.h> using namespace std; const int N = 6e5+10; int a[N]; int cnt[N]; int main() { int n; cin>>n; for(in...

2026-01-03

2 34

题解 | 华华给月月准备礼物

#include <bits/stdc++.h> using namespace std; typedef long long ll; const int N = 3e5+10; int len[N]; int n,k; bool check(int x) { ll cnt = ...

2026-01-02

1 25

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 = 3e5+10; int n; int indg[N]; struct Node { int l,r; }e[N]; void dfs1(int u) { ...

2026-01-01

1 31

题解 | 小红的01串

#include <bits/stdc++.h> using namespace std; void solve() { string s; cin>>s; int n = s.size(); string s2 = s; for(i...

2025-12-31

1 29