답안 #523927

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
523927	2022-02-08T12:19:33 Z	Bill_00	별들과 삼각형 (IZhO11_triangle)	C++14	100 / 100	150 ms	11856 KB

triangle

#include <bits/stdc++.h>
#define MOD 1000000007
typedef long long ll;
using namespace std;

int x[1000000], y[1000000];
unordered_map<int, ll> um[2];

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	
	int n;
	cin >> n;
	for(int i = 1; i <= n; i++){
		cin >> x[i] >> y[i];
		um[0][x[i]]++;
		um[1][y[i]]++;
	}
	ll ans = 0;
	for(int i = 1; i <= n; i++){
		ans += ((um[0][x[i]] - 1) * (um[1][y[i]] - 1));
	}
	cout << ans;
}

Subtask #1

100.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	0 ms	316 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	316 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	320 KB	Output is correct
8	Correct	1 ms	320 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	5 ms	840 KB	Output is correct
13	Correct	5 ms	956 KB	Output is correct
14	Correct	5 ms	1196 KB	Output is correct
15	Correct	45 ms	5884 KB	Output is correct
16	Correct	48 ms	6076 KB	Output is correct
17	Correct	48 ms	5836 KB	Output is correct
18	Correct	40 ms	5828 KB	Output is correct
19	Correct	106 ms	11180 KB	Output is correct
20	Correct	100 ms	8956 KB	Output is correct
21	Correct	150 ms	11856 KB	Output is correct
22	Correct	123 ms	11816 KB	Output is correct