답안 #914038

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
914038	2024-01-20T21:14:52 Z	kabgoy	별들과 삼각형 (IZhO11_triangle)	C++17	100 / 100	248 ms	6032 KB

triangle

#include <bits/stdc++.h>
using namespace std;

int
main(void)
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int n;
	cin >> n;
	vector<int> x(n), y(n);
	map<int,int> cntx, cnty;
	for(int i = 0; i < n; i++){
		cin >> x[i] >> y[i];
		cntx[x[i]]++;
		cnty[y[i]]++;
	}
	long long ans = 0;
	for(int i = 0; i < n; i++)
		ans += (cntx[x[i]]-1) * (long long)(cnty[y[i]]-1);
	cout << ans << '\n';
}

Subtask #1

100.0 / 100.0

#	결과	실행 시간	메모리	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	1 ms	344 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 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	7 ms	860 KB	Output is correct
13	Correct	5 ms	860 KB	Output is correct
14	Correct	8 ms	1116 KB	Output is correct
15	Correct	83 ms	4152 KB	Output is correct
16	Correct	86 ms	4176 KB	Output is correct
17	Correct	80 ms	4028 KB	Output is correct
18	Correct	80 ms	3920 KB	Output is correct
19	Correct	224 ms	5900 KB	Output is correct
20	Correct	157 ms	4944 KB	Output is correct
21	Correct	228 ms	5716 KB	Output is correct
22	Correct	248 ms	6032 KB	Output is correct