//Euzibillahiminesseytanirracim Bismillahirrahmanirrahim
/*
ID:
TASK:
LANG: C++
*/
#include <bits/stdc++.h>
#define pb push_back
#define ll long long
#define ff first
#define ss second
#define mp make_pair
#define PII pair<int,int>
#define inf 1000000001
using namespace std;
map<int,int> m , p;
int n, x[303001], y[303001], ans;
int main()
{
cin>>n;
for(int i=1;i<=n;i++){
cin>>x[i]>>y[i];
m[x[i]]++;
p[y[i]]++;
}
for(int i=1;i<=n;i++){
ans += (m[x[i]] - 1)*(m[y[i]] - 1);
}
cout<<ans<<"\n";
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
380 KB |
Output is correct |
| 2 |
Correct |
2 ms |
412 KB |
Output is correct |
| 3 |
Correct |
2 ms |
580 KB |
Output is correct |
| 4 |
Incorrect |
2 ms |
580 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
