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Submission #700176

# Submission time Handle Problem Language Result Execution time Memory
700176 2023-02-18T18:38:47 Z pera Star triangles (IZhO11_triangle) C++14
100 / 100
 287 ms 15644 KB 
#include<bits/stdc++.h>
#include<vector>

using namespace std;

#define pb push_back
#define ll long long
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()

const ll mod = 1e9 + 7 , N = 2e5 + 100;

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0),cout.tie(0);
	ll n;cin >> n;
	ll ans = 0;
	map<ll , ll> mx , my;
	vector<pair<ll , ll>> a(n + 1);
	for(int i = 1;i <= n;i ++){
		cin >> a[i].first >> a[i].second;
		++ mx[a[i].first];
		++ my[a[i].second];
	}
	for(int i = 1;i <= n;i ++){
		ans += (mx[a[i].first] - 1) * (my[a[i].second] - 1);
	}
	cout << ans << endl;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 320 KB Output is correct
3 Correct 0 ms 320 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 320 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 6 ms 1360 KB Output is correct
13 Correct 5 ms 1236 KB Output is correct
14 Correct 10 ms 1792 KB Output is correct
15 Correct 95 ms 7864 KB Output is correct
16 Correct 104 ms 8240 KB Output is correct
17 Correct 98 ms 7888 KB Output is correct
18 Correct 105 ms 7952 KB Output is correct
19 Correct 266 ms 14868 KB Output is correct
20 Correct 191 ms 11856 KB Output is correct
21 Correct 287 ms 15644 KB Output is correct
22 Correct 280 ms 15576 KB Output is correct