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Submission #331862

# Submission time Handle Problem Language Result Execution time Memory
331862 2020-11-30T14:01:49 Z nandonathaniel Star triangles (IZhO11_triangle) C++14
100 / 100
 465 ms 12372 KB 
#include<bits/stdc++.h>
using namespace std;
const int MAXN=300005;

int x[MAXN],y[MAXN];
map<int,int> mpx,mpy;

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];
		mpx[x[i]]++;
		mpy[y[i]]++;
	}
	long long ans=0;
	for(int i=1;i<=n;i++){
		ans=ans+1LL*(mpx[x[i]]-1)*(mpy[y[i]]-1);
	}
	cout << ans << '\n';
	return 0;
}

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 512 KB Output is correct
4 Correct 1 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 492 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 7 ms 1004 KB Output is correct
13 Correct 7 ms 1132 KB Output is correct
14 Correct 12 ms 1388 KB Output is correct
15 Correct 182 ms 6508 KB Output is correct
16 Correct 142 ms 6508 KB Output is correct
17 Correct 125 ms 6252 KB Output is correct
18 Correct 127 ms 6252 KB Output is correct
19 Correct 442 ms 11812 KB Output is correct
20 Correct 264 ms 9324 KB Output is correct
21 Correct 465 ms 12268 KB Output is correct
22 Correct 413 ms 12372 KB Output is correct