oj.uz

Submission #878475

# Submission time Handle Problem Language Result Execution time Memory
878475 2023-11-24T13:49:46 Z Kak008723 Star triangles (IZhO11_triangle) C++14
100 / 100
 243 ms 12408 KB 
#include<bits/stdc++.h>
#define x first
#define y second
using namespace std;
const int N = 3e5+5;
pair<int,int> p[N];
map<int,int> mp,mp1;
int main(){
	ios::sync_with_stdio(0);cin.tie(0);
	cout.tie(0);
	int n,ans=0;
	cin>>n;
	for(int i=1;i<=n;i++) cin>>p[i].x>>p[i].y, mp[p[i].x]++,mp1[p[i].y]++;
	for(int i=1;i<=n;i++){
		ans += (long long )(mp[p[i].x]-1) * (long long )(mp1[p[i].y]-1);
	}
	cout<<ans;
}

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 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 464 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 5 ms 984 KB Output is correct
13 Correct 5 ms 1624 KB Output is correct
14 Correct 7 ms 1372 KB Output is correct
15 Correct 84 ms 7508 KB Output is correct
16 Correct 87 ms 7760 KB Output is correct
17 Correct 80 ms 7508 KB Output is correct
18 Correct 80 ms 7748 KB Output is correct
19 Correct 220 ms 11636 KB Output is correct
20 Correct 155 ms 9964 KB Output is correct
21 Correct 231 ms 12300 KB Output is correct
22 Correct 243 ms 12408 KB Output is correct