oj.uz

Submission #89798

# Submission time Handle Problem Language Result Execution time Memory
89798 2018-12-18T12:27:57 Z Atashka01 Star triangles (IZhO11_triangle) C++11
100 / 100
 594 ms 6140 KB 
//Euzibillahiminesseytanirracim Bismillahirrahmanirrahim

/*
ID:
TASK:
LANG: C++
*/

#include <bits/stdc++.h>
#define pb push_back
#define ll long long
#define ff first
#define ss second
#define mp make_pair
#define PII pair<int,int>
#define inf 1000000001
using namespace std;

map<int,int> m , p;

int n, x[300001], y[300001], ans;

int main()
{
	
	cin>>n;
	
	for(int i=1;i<=n;i++){
		
		scanf("%d%d", &x[i], &y[i]);
		
		m[x[i]]++;
		p[y[i]]++;
		
	}
	
	for(int i=1;i<=n;i++){
		
		ans += (m[x[i]] - 1)*(p[y[i]] - 1);
		
	}
	
	printf("%d\n", ans);
	
}

/*

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_________8BBBBBB8    BBBBBBB*
_________BBBBBB*     8BBBBB*
________oBBBB8       BBBBB*
________oBBB8        BBBB*
________BBBB8       8BBBBo
_______8BBBB*      oBBBBBBo
______8BBBB*       *BBBBBBBB8o
______BBBBB*            *88BBBo
*/

Compilation message

triangle.cpp: In function 'int main()':
triangle.cpp:30:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &x[i], &y[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 472 KB Output is correct
3 Correct 4 ms 472 KB Output is correct
4 Correct 2 ms 472 KB Output is correct
5 Correct 2 ms 472 KB Output is correct
6 Correct 2 ms 532 KB Output is correct
7 Correct 2 ms 628 KB Output is correct
8 Correct 2 ms 628 KB Output is correct
9 Correct 2 ms 628 KB Output is correct
10 Correct 2 ms 628 KB Output is correct
11 Correct 3 ms 648 KB Output is correct
12 Correct 11 ms 1000 KB Output is correct
13 Correct 10 ms 1180 KB Output is correct
14 Correct 17 ms 1320 KB Output is correct
15 Correct 213 ms 4264 KB Output is correct
16 Correct 241 ms 4292 KB Output is correct
17 Correct 179 ms 4304 KB Output is correct
18 Correct 167 ms 4348 KB Output is correct
19 Correct 535 ms 5788 KB Output is correct
20 Correct 358 ms 5788 KB Output is correct
21 Correct 594 ms 6052 KB Output is correct
22 Correct 553 ms 6140 KB Output is correct