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Submission #971330

# Submission time Handle Problem Language Result Execution time Memory
971330 2024-04-28T11:22:55 Z vjudge1 Star triangles (IZhO11_triangle) C++17
100 / 100
 922 ms 34436 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long

signed main(){
    int n;
    cin>>n;
    pair<int,int>kartesius[n+1];
    map<int,int >y;
    map<int,int>x;
    map<pair<int,int>,int> cek;

    for(int j=1;j<=n;j++ ){
        cin>>kartesius[j].first>>kartesius[j].second;
        int q=kartesius[j].first;
        int w=kartesius[j].second;

        if(cek[{q,w}]!=1){

            cek[{q,w}]=1;
            if(!x.count(q)){
                x[q]=1;
            }
            else{
                x[q]++;
            }
            if(!y.count(w)){
                y[w]=1;
            }
            else{
                y[w]++;
            }
        }
    }
    int ans=0;
    for(int k=1;k<=n;k++){
        int hori=kartesius[k].first;
        int ver=kartesius[k].second;
        if(cek[{hori,ver}]==1){
            ans+=(x[hori]-1)*(y[ver]-1);
            cek[{hori,ver}]=2;
        }
    }
  //  cout<<cek[{1,1}]<<endl;
    cout<<ans<<endl;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 2 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 14 ms 1884 KB Output is correct
13 Correct 14 ms 1908 KB Output is correct
14 Correct 20 ms 2372 KB Output is correct
15 Correct 235 ms 14448 KB Output is correct
16 Correct 245 ms 15184 KB Output is correct
17 Correct 224 ms 14292 KB Output is correct
18 Correct 220 ms 14068 KB Output is correct
19 Correct 759 ms 32344 KB Output is correct
20 Correct 508 ms 24404 KB Output is correct
21 Correct 922 ms 34432 KB Output is correct
22 Correct 851 ms 34436 KB Output is correct