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Submission #318557

# Submission time Handle Problem Language Result Execution time Memory
318557 2020-11-02T10:32:48 Z sofapuden Star triangles (IZhO11_triangle) C++14
100 / 100
 598 ms 12328 KB 
#include <bits/stdc++.h>

using namespace std;

int main(){
	int n; cin >> n;
	map<int,int> X, Y;
	vector<pair<int,int>> v(n);
	for(auto &x : v){cin >> x.first >> x.second;X[x.first]++, Y[x.second]++;}
	long long ans = 0;
	for(int i = 0; i < n; ++i){
		ans+=(X[v[i].first]-1)*(Y[v[i].second]-1);
	}
	cout << ans << "\n";
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory 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 0 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 384 KB Output is correct
11 Correct 2 ms 492 KB Output is correct
12 Correct 12 ms 1024 KB Output is correct
13 Correct 13 ms 1132 KB Output is correct
14 Correct 18 ms 1388 KB Output is correct
15 Correct 193 ms 6244 KB Output is correct
16 Correct 224 ms 6628 KB Output is correct
17 Correct 202 ms 6248 KB Output is correct
18 Correct 200 ms 6244 KB Output is correct
19 Correct 552 ms 11748 KB Output is correct
20 Correct 402 ms 9444 KB Output is correct
21 Correct 597 ms 12264 KB Output is correct
22 Correct 598 ms 12328 KB Output is correct