oj.uz

Submission #976934

# Submission time Handle Problem Language Result Execution time Memory
976934 2024-05-07T09:24:11 Z ArgoCahaya Star triangles (IZhO11_triangle) C++14
100 / 100
 277 ms 17152 KB 
#include<bits/stdc++.h>
#define ll long long
#define endl "\n"
#define fi first
#define se second
#define pb push_back
#define pll pair<long long, long long>
using namespace std;


void solve(){
	ll n;
	cin >> n;
	map<ll,ll> x;
	map<ll,ll> y;
	vector<pll> v;
	for(int i=1;i<=n;i++){
		ll a,b;
		cin >> a >> b;
		x[a]++;
		y[b]++;
		v.pb({a,b});
	}
	ll ans = 0;
	for(auto i:v){
		ans += (x[i.fi]-1) * (y[i.se]-1);
	}
	cout << ans << endl;
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int tc = 1;
//	cin >> tc;
	while(tc--){
	   solve();
	}
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 456 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 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 8 ms 1372 KB Output is correct
13 Correct 5 ms 1356 KB Output is correct
14 Correct 10 ms 1752 KB Output is correct
15 Correct 91 ms 7108 KB Output is correct
16 Correct 104 ms 7616 KB Output is correct
17 Correct 86 ms 7020 KB Output is correct
18 Correct 99 ms 7188 KB Output is correct
19 Correct 235 ms 17152 KB Output is correct
20 Correct 180 ms 11616 KB Output is correct
21 Correct 277 ms 16984 KB Output is correct
22 Correct 260 ms 16540 KB Output is correct