답안 #4874

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
4874	2014-01-06T07:34:35 Z	ainta	별들과 삼각형 (IZhO11_triangle)	C++	100 / 100	476 ms	6588 KB

triangle

#include<stdio.h>
#include<algorithm>
#include<map>
using namespace std;
map<int, int>Map1, Map2;
int n, w[300010][2], i;
long long R;
int main()
{
	scanf("%d", &n);
	for (i = 0; i < n; i++){
		scanf("%d%d", &w[i][0], &w[i][1]);
		Map1[w[i][0]]++, Map2[w[i][1]]++;
	}
	for (i = 0; i < n; i++){
		R = R +(long long)(Map1[w[i][0]] - 1)*(Map2[w[i][1]] - 1);
	}
	printf("%lld\n", R);
}

Subtask #1

100.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	3552 KB	Output is correct
2	Correct	0 ms	3552 KB	Output is correct
3	Correct	0 ms	3552 KB	Output is correct
4	Correct	0 ms	3552 KB	Output is correct
5	Correct	0 ms	3552 KB	Output is correct
6	Correct	0 ms	3552 KB	Output is correct
7	Correct	0 ms	3552 KB	Output is correct
8	Correct	0 ms	3552 KB	Output is correct
9	Correct	0 ms	3552 KB	Output is correct
10	Correct	0 ms	3552 KB	Output is correct
11	Correct	0 ms	3552 KB	Output is correct
12	Correct	8 ms	3948 KB	Output is correct
13	Correct	8 ms	3948 KB	Output is correct
14	Correct	8 ms	4344 KB	Output is correct
15	Correct	156 ms	6456 KB	Output is correct
16	Correct	176 ms	6456 KB	Output is correct
17	Correct	164 ms	6456 KB	Output is correct
18	Correct	156 ms	6456 KB	Output is correct
19	Correct	468 ms	6588 KB	Output is correct
20	Correct	308 ms	6588 KB	Output is correct
21	Correct	476 ms	6588 KB	Output is correct
22	Correct	468 ms	6588 KB	Output is correct