답안 #334593

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
334593	2020-12-09T14:30:24 Z	sahil_k	별들과 삼각형 (IZhO11_triangle)	C++14	100 / 100	534 ms	12396 KB

triangle

#include <iostream>
#include <map>
using namespace std;
int main () {
	int n;
	cin >> n;
	pair<int, int> pos[n];
	for (int i=0; i<n; i++) {
		cin >> pos[i].first >> pos[i].second;
	}
	map<int, int> rows;
	for (int i=0; i<n; i++) {
		rows[pos[i].first]++;
	}
	map<int, int> cols;
	for (int i=0; i<n; i++) {
		cols[pos[i].second]++;
	}
	long long o = 0;
	for (int i=0; i<n; i++) {
		o += 1ll*(rows[pos[i].first]-1)*(cols[pos[i].second]-1);
	}
	cout << o << endl;
}

Subtask #1

100.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	2 ms	364 KB	Output is correct
12	Correct	12 ms	1004 KB	Output is correct
13	Correct	13 ms	1004 KB	Output is correct
14	Correct	17 ms	1388 KB	Output is correct
15	Correct	182 ms	6124 KB	Output is correct
16	Correct	197 ms	6508 KB	Output is correct
17	Correct	179 ms	6124 KB	Output is correct
18	Correct	179 ms	6124 KB	Output is correct
19	Correct	492 ms	11500 KB	Output is correct
20	Correct	358 ms	9204 KB	Output is correct
21	Correct	534 ms	12396 KB	Output is correct
22	Correct	528 ms	12140 KB	Output is correct