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Submission #974974

# Submission time Handle Problem Language Result Execution time Memory
974974 2024-05-04T08:42:40 Z vjudge1 Star triangles (IZhO11_triangle) C++17
100 / 100
 940 ms 34548 KB 
#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define all(v) v.begin(),v.end()
#define forn(i,n) for(int i = 1; i<=n; i++)
#define fi first
#define sc second
using namespace std;



int main(){
	map<ll,ll> mpx,mpy;
	map<pair<ll,ll>, ll> mpdup;
	ll n;
	cin >> n;
	pair<ll,ll> arr[n+99];
	forn(i,n){
		ll x,y;
		cin >> x >> y;
		mpx[x]++;
		mpy[y]++;
		mpdup[{x,y}]++;
		arr[i] = {x,y};
	}
	ll sum = 0;

	
	forn(i,n){
		ll x = arr[i].fi,y = arr[i].sc;
		
		if(mpdup[{x,y}] == 0)continue;
		
		ll dup = mpdup[{x,y}];
		
		if(mpdup[{x,y}] == 1){
			sum += (mpx[x]-1) * (mpy[y]-1); 	
		}else{
			sum += (mpx[x] - dup )*(mpy[y] - dup )*(dup);
		}
		mpdup[{x,y}] = 0;
	}
	
	cout<<sum;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 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 1 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 1 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 2 ms 348 KB Output is correct
12 Correct 14 ms 1748 KB Output is correct
13 Correct 14 ms 1884 KB Output is correct
14 Correct 18 ms 2396 KB Output is correct
15 Correct 247 ms 14080 KB Output is correct
16 Correct 266 ms 15188 KB Output is correct
17 Correct 266 ms 14288 KB Output is correct
18 Correct 249 ms 14072 KB Output is correct
19 Correct 791 ms 32588 KB Output is correct
20 Correct 508 ms 24460 KB Output is correct
21 Correct 940 ms 34444 KB Output is correct
22 Correct 911 ms 34548 KB Output is correct