Submission #494472

#	Time	Username	Problem	Language	Result	Execution time	Memory
494472		asiat	Star triangles (IZhO11_triangle)	C++17	0 / 100	1 ms	204 KiB

triangle

#include <bits/stdc++.h>


#define ff first

#define ss second

using namespace std;

int main(){
	ios::sync_with_stdio(0), cin.tie(0);
	int n; cin >> n;
	vector <pair<int , int>> v;
	int t = n;
	while(t--){
		int x , y;
		cin >> x >> y;
		v.push_back({x , y});
	}
	int ans = 0;
	for (int i = 0; i < n; i++){
		for (int j = i + 1; j < n; j++){
			for (int k = i +1; k < n; k++){
				if((v[i].first != v[j].first and v[i].first !=
				v[k].first) or (v[i].second != v[j].second and v[i].second !=
				v[k].second))ans++;
			}
		}
	}
	cout << ans / 3<< endl;
	return 0;
}

• Subtask 1: 0 / 100