摘要： code: #include<bits/stdc++.h>//xfl using namespace std; const int N = 100007; typedef unsigned long long ull; ull mis[N],sum[N]; string s; int n,m,l1, 阅读全文

摘要： code: 1.set或map #include<bits/stdc++.h>//xfl using namespace std; map<int,bool>a; int main() { int n; cin>>n; for(int i=1;i<=n;++i) { int x;char c; ci 阅读全文