답안 #886443

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
886443	2023-12-12T07:30:27 Z	Zero	별들과 삼각형 (IZhO11_triangle)	C++17	100 / 100	272 ms	20480 KB

triangle

#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

#	결과	실행 시간	메모리	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