#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
typedef pair<int, int> PII;
typedef pair<string,int> PSI;
#define f first
#define s second
#define pb push_back
signed main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr),cout.tie(nullptr);
return 0;
}
我的十七代:
受教,orz