Submission #62766188

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#include<bits/stdc++.h>
using namespace std;
using ll=long long;
int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
    
    int n,m;
    cin>>n>>m;
    int cnt=0;
    set<pair<int,int>> s;
    for(int i=1;i<=m;i++){
        int u,v;
        cin>>u>>v;
        if(u>v)swap(u,v);
        if(u==v){
            cnt++;
            continue;
        }
        if(s.count({u,v})){
 
 
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#include<bits/stdc++.h>
using namespace std;
using ll=long long;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
    
    int n,m;
    cin>>n>>m;
    int cnt=0;
    set<pair<int,int>> s;
    for(int i=1;i<=m;i++){
        int u,v;
        cin>>u>>v;
        if(u>v)swap(u,v);
        if(u==v){
            cnt++;
            continue;
        }
        if(s.count({u,v})){
            cnt++;
        }else{
            s.insert({u,v});
        }
    }
    cout<<cnt;

    return 0;
}

Submission Info

Judge Result