oj.uz

Submission #901105

# Submission time Handle Problem Language Result Execution time Memory
901105 2024-01-09T07:07:04 Z LCJLY Star triangles (IZhO11_triangle) C++14
100 / 100
 279 ms 15696 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << "  " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << "  " << j << " " << #i << "  " << q << " " << #p << endl; 
#define show4(x,y) for(auto it:x) cout << it << " "; cout << #y << endl;
typedef pair<long long,long long>pii;

void solve(){	
	int n;
	cin >> n;
	pii arr[n];
	map<int,int>hori;
	map<int,int>vert;
	for(int x=0;x<n;x++){
		cin >> arr[x].first >> arr[x].second;
		hori[arr[x].first]++;
		vert[arr[x].second]++;
	}
	
	int counter=0;
	for(int x=0;x<n;x++){
		int hold=hori[arr[x].first]-1;
		int hold2=vert[arr[x].second]-1;
		counter+=(hold*hold2);
	}
	
	cout << counter;
	
	
}	

int32_t main(){										
	ios::sync_with_stdio(0);	
	cin.tie(0);
	int t=1;
	//cin >> t;
	while(t--){
		solve();
	}
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 452 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 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 5 ms 1372 KB Output is correct
13 Correct 5 ms 1372 KB Output is correct
14 Correct 8 ms 1908 KB Output is correct
15 Correct 84 ms 8052 KB Output is correct
16 Correct 96 ms 8272 KB Output is correct
17 Correct 101 ms 7996 KB Output is correct
18 Correct 87 ms 8064 KB Output is correct
19 Correct 244 ms 14864 KB Output is correct
20 Correct 178 ms 11968 KB Output is correct
21 Correct 267 ms 15696 KB Output is correct
22 Correct 279 ms 15688 KB Output is correct