답안 #523928

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
523928	2022-02-08T12:20:39 Z	Bill_00	별들과 삼각형 (IZhO11_triangle)	C++14	100 / 100	147 ms	11836 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	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	2 ms	204 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	332 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	332 KB	Output is correct
12	Correct	4 ms	716 KB	Output is correct
13	Correct	4 ms	716 KB	Output is correct
14	Correct	6 ms	1100 KB	Output is correct
15	Correct	43 ms	3684 KB	Output is correct
16	Correct	40 ms	3824 KB	Output is correct
17	Correct	39 ms	3672 KB	Output is correct
18	Correct	39 ms	5804 KB	Output is correct
19	Correct	130 ms	11184 KB	Output is correct
20	Correct	138 ms	8828 KB	Output is correct
21	Correct	147 ms	11836 KB	Output is correct
22	Correct	142 ms	11772 KB	Output is correct