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답안 #497909

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
497909 2021-12-24T04:37:38 Z Aktan 별들과 삼각형 (IZhO11_triangle) C++14
100 / 100
 955 ms 34404 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define int long long
#define ft first
#define sc second
using namespace std;
const int mod=1e9+7,INF=1e17;

int a[300005],b[300005];
multiset<pair<int,int>> p;
map<int,int> m,m1;
 main(){
   int n,ans=0;
   
   cin >> n;
   
   for(int i=0;i<n;i++){
   	cin >> a[i] >> b[i];
   	p.insert({a[i],b[i]});
   	m[a[i]]++;
   	m1[b[i]]++;
   }
   for(auto x : p){
	   ans+=(m[x.ft]-1)*(m1[x.sc]-1);
	}
  cout << ans;
   
   
   
   
   
}

Compilation message

triangle.cpp:15:2: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   15 |  main(){
      |  ^~~~

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 304 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 300 KB Output is correct
7 Correct 1 ms 276 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 2 ms 300 KB Output is correct
11 Correct 2 ms 368 KB Output is correct
12 Correct 19 ms 1844 KB Output is correct
13 Correct 18 ms 1864 KB Output is correct
14 Correct 23 ms 2312 KB Output is correct
15 Correct 300 ms 14172 KB Output is correct
16 Correct 357 ms 15128 KB Output is correct
17 Correct 335 ms 14160 KB Output is correct
18 Correct 272 ms 14260 KB Output is correct
19 Correct 888 ms 32140 KB Output is correct
20 Correct 671 ms 24260 KB Output is correct
21 Correct 955 ms 34404 KB Output is correct
22 Correct 883 ms 34300 KB Output is correct