oj.uz

Submission #886443

# Submission time Handle Problem Language Result Execution time Memory
886443 2023-12-12T07:30:27 Z Zero Star triangles (IZhO11_triangle) C++17
100 / 100
 272 ms 20480 KB 
#include<bits/stdc++.h>
#define int long long
#define INF 1e9
#define pb push_back
using namespace std;



void solve(){
	int n; cin >> n;
	vector<pair<int,int>> v;
	map<int,int> x,y;
	for(int i=0; i < n; i ++){
		int q,w; cin >> q >> w;
		v.pb({q,w});
		x[q]++; y[w] ++;
		// y[q]++; x[w] ++;
	}
	int s = 0;
	for(auto i : v){
		s += (x[i.first] - 1) * (y[i.second] - 1);
		
	}
	cout << s;
	
	
}

signed main(){
	cin.tie(0)->sync_with_stdio(0);
	cout.tie(0)->sync_with_stdio(0);
	int t;
	t=1;
	// cin >> t;
	while(t--){
		solve();
		cout << '\n';
	}
}

Subtask #1
100.0 / 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 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 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 5 ms 1312 KB Output is correct
13 Correct 5 ms 1372 KB Output is correct
14 Correct 9 ms 1748 KB Output is correct
15 Correct 89 ms 8052 KB Output is correct
16 Correct 94 ms 8212 KB Output is correct
17 Correct 91 ms 7984 KB Output is correct
18 Correct 93 ms 7872 KB Output is correct
19 Correct 239 ms 20480 KB Output is correct
20 Correct 176 ms 11972 KB Output is correct
21 Correct 272 ms 19624 KB Output is correct
22 Correct 263 ms 20152 KB Output is correct