oj.uz

Submission #499013

# Submission time Handle Problem Language Result Execution time Memory
499013 2021-12-27T03:44:33 Z beksultan04 Star triangles (IZhO11_triangle) C++14
100 / 100
 561 ms 18464 KB 
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define int long long
#define pii pair<int,int>
#define ret return
#define fr first
#define sc second
#define OK puts("OK");
#define NO puts("NO");
#define YES puts("YES");
#define all(s) s.begin(),s.end()
#define allr(s) s.rbegin(),s.rend()
#define nosol puts("-1");
#define pb push_back
#define endi puts("");
const int N = 1e6+12,INF = 1e15+7;
#define ordered_set tree <int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
int y[N],x[N];


main(){
	int n,i,x,y,ans=0;
	cin>>n;
	vector <pii> v;
	map<int,int> mpx,mpy;
	for (i=1;i<=n;++i){
		cin>>x>>y;
		mpx[x]++;
		mpy[y]++;
		v.pb({x,y});
	}
	
	for (auto p:v){
		int x = p.fr,y = p.sc;
		ans += (mpx[x]-1)*(mpy[y]-1);
	}
	cout <<ans;
	
}

Compilation message

triangle.cpp:24:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   24 | main(){
      | ^~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 304 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 292 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 10 ms 1176 KB Output is correct
13 Correct 11 ms 1184 KB Output is correct
14 Correct 20 ms 1732 KB Output is correct
15 Correct 195 ms 7908 KB Output is correct
16 Correct 190 ms 8340 KB Output is correct
17 Correct 215 ms 7904 KB Output is correct
18 Correct 167 ms 7856 KB Output is correct
19 Correct 490 ms 18420 KB Output is correct
20 Correct 329 ms 11716 KB Output is correct
21 Correct 561 ms 18464 KB Output is correct
22 Correct 534 ms 18396 KB Output is correct