oj.uz

Submission #914037

# Submission time Handle Problem Language Result Execution time Memory
914037 2024-01-20T21:13:02 Z kabgoy Star triangles (IZhO11_triangle) C++17
100 / 100
 390 ms 12380 KB 
#include <bits/stdc++.h>
using namespace std;

int
main(void)
{
	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

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 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 9 ms 1116 KB Output is correct
13 Correct 10 ms 1116 KB Output is correct
14 Correct 14 ms 1372 KB Output is correct
15 Correct 126 ms 6228 KB Output is correct
16 Correct 151 ms 6492 KB Output is correct
17 Correct 129 ms 6240 KB Output is correct
18 Correct 127 ms 6148 KB Output is correct
19 Correct 365 ms 11536 KB Output is correct
20 Correct 259 ms 9296 KB Output is correct
21 Correct 390 ms 12380 KB Output is correct
22 Correct 379 ms 12112 KB Output is correct