oj.uz

Submission #344326

# Submission time Handle Problem Language Result Execution time Memory
344326 2021-01-05T13:43:27 Z nicolaalexandra Star triangles (IZhO11_triangle) C++14
100 / 100
 584 ms 5740 KB 
#include <bits/stdc++.h>
#define DIM 300010
using namespace std;

map <int,int> x,y;
pair <int,int> v[DIM];
int n,i;

int main (){

    //ifstream cin ("date.in");
    //ofstream cout ("date.out");

    cin>>n;

    for (i=1;i<=n;i++){
        cin>>v[i].first>>v[i].second;
        x[v[i].first]++;
        y[v[i].second]++;
    }

    long long sol = 0;
    for (i=1;i<=n;i++)
        sol += 1LL * (x[v[i].first] - 1) * (y[v[i].second] - 1);

    cout<<sol;


    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 2 ms 364 KB Output is correct
12 Correct 12 ms 1004 KB Output is correct
13 Correct 13 ms 1132 KB Output is correct
14 Correct 18 ms 1388 KB Output is correct
15 Correct 217 ms 4588 KB Output is correct
16 Correct 202 ms 4716 KB Output is correct
17 Correct 216 ms 4608 KB Output is correct
18 Correct 188 ms 4588 KB Output is correct
19 Correct 555 ms 5660 KB Output is correct
20 Correct 380 ms 4972 KB Output is correct
21 Correct 572 ms 5740 KB Output is correct
22 Correct 584 ms 5740 KB Output is correct