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답안 #976474

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
976474 2024-05-06T15:16:29 Z vjudge1 별들과 삼각형 (IZhO11_triangle) C++17
0 / 100
 0 ms 344 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pb push_back
#define pll pair<ll,ll>

const ll MOD=1e9+7;

//#define ll int
//KALAU TAKUT RTE

bool cmp (pair<ll,ll> x, pair<ll,ll>y){
	return x.second < y.second;
}

signed main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	ll n; cin>>n;
	ll x[n+1], y[n+1], cntx[n+1], cnty[n+1];
	for (int i=1; i<=n;i++){
		cin>>x[i]>>y[i];
		cntx[x[i]]++; cnty[y[i]]++;
	}
	
	ll ans=0;
	for (int i=1; i<=n;i++){
		ans+= (cntx[x[i]]-1) * (cnty[y[i]]-1);
	}
	cout<<ans<<endl;
}

Subtask #1
0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -