Submission #1219547

#	Time	Username	Problem	Language	Result	Execution time	Memory
1219547		lizi14	Star triangles (IZhO11_triangle)	C++20	0 / 100	2096 ms	328 KiB

triangle

#include <bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    vector<pair<int,int>>v(n);
    for(int i=0; i<n; i++){
        int j,k;
        cin>>j>>k;
        pair<int,int>p={j,k};
        v[i]=p;
    }
    long long ans=0;
    sort(v.begin(),v.end());
    for(int i=0; i<v.size(); i++){
        int h=0;
        for(int j=i+1; j<v.size(); j++){
            if(h==1 && v[j].first!=v[i].first || v[j].first>v[i].first)break;
            int b=0;
            if(v[j].first==v[i].first){
                h=1;
                for(int t=0; t<v.size(); t++){
                    //if(v[t].second!=v[i].second && v[t].second!=v[j].second && b==1)break;
                    if(t!=i && t!=j){
                        if(v[t].second==v[i].second ){
                            ans++;
                            b=1;
                        }
                        if(v[t].second==v[j].second){
                            ans++; 
                            b=1;
                        }
                    }
                    
                }
            }
        }
    }
    cout<<ans<<endl;
}

• Subtask 1: 0 / 100