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全部文章（共13篇）

题解 | 铺地毯

#include <iostream> using namespace std; class dit{ public: int x,y; int xp,yp; }; int main() { int n; cin>>n; int ans=-...

2026-02-07

0 14

题解 | 字符串展开

#include <algorithm> #include <cctype> #include <iostream> #include <string> using namespace std; bool isnum(char c){ retu...

2026-02-07

0 12

题解 | 回文日期

#include <algorithm> #include <bits/stdc++.h> #include <string> using namespace std; int day31[7] = {1, 3, 5, 7, 8, 10, 12}; int day...

2026-02-06

0 14

题解 | 最大子数组和

#include <bits/stdc++.h> #include <sys/types.h> #include <vector> using namespace std; int main() { int n; cin>>n; ...

2026-02-06

0 17

题解 | 走迷宫

#include <bits/stdc++.h> #include <cstring> #include <vector> using namespace std; class p { public: p() {}; p(int x1, i...

2025-12-23

0 37

题解 | #Missing#

#include<bits/stdc++.h> using namespace std; int main(){ string s; cin>&g...

C++

2025-12-08

0 28

题解 | 质数统计

#include <iostream> #include <vector> using namespace std; const int M =1e6; vector<bool>is_prime(M,true); vector<int>prefix(M...

2025-12-04

0 22

题解 | 小红的三带一

#include <iostream> #include <map> #include <vector> using namespace std; int main() { int n; cin>>n; if(n>4){ ...

2025-12-03

0 25

题解 | 小红的k次方

#include <bits/stdc++.h> #include <iostream> #include <vector> using namespace std; #define int long long signed main() { int ...

2025-12-01

0 30

题解 | 出现奇数次的数

#include <iostream> #include <map> using namespace std; int main() { int n; cin>>n; n*=2; n++; map<int,int&g...

2025-11-30

0 31