oj.uz

Submission #899208

# Submission time Handle Problem Language Result Execution time Memory
899208 2024-01-05T15:37:02 Z pcc Star triangles (IZhO11_triangle) C++14
0 / 100
 83 ms 7972 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>


const int mxn = 1e5+10;
map<int,int> xcnt,ycnt;
pii arr[mxn];

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int n;
	cin>>n;
	for(int i = 0;i<n;i++){
		cin>>arr[i].fs>>arr[i].sc;
		xcnt[arr[i].fs]++;
		ycnt[arr[i].sc]++;
	}
	ll ans = 0;
	for(int i = 0;i<n;i++){
		ans += 1ll*(xcnt[arr[i].fs]-1)*(ycnt[arr[i].sc]-1);
	}
	cout<<ans;
}

Subtask #1
0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 6 ms 860 KB Output is correct
13 Correct 5 ms 860 KB Output is correct
14 Correct 7 ms 1352 KB Output is correct
15 Correct 83 ms 3924 KB Output is correct
16 Runtime error 53 ms 7972 KB Execution killed with signal 11
17 Halted 0 ms 0 KB -