oj.uz

Submission #90105

# Submission time Handle Problem Language Result Execution time Memory
90105 2018-12-20T09:44:13 Z YottaByte Beautiful row (IZhO12_beauty) C++14
0 / 100
 2 ms 256 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 20;
int a[N + 1], n, ans, c2[N + 1], c3[N + 1];

inline int count(int a)
{
	int res = 0;
	while(a)
	{
		res += (a % 3 == 1);
		a /= 3;
	}
	return res;
}

main()
{
	cin >> n;
	for(int i = 1; i <= n; i++)
	{
		cin >> a[i];
		c2[i] = __builtin_popcount(a[i]);
		c3[i] = count(a[i]);
	}
	
	for(int i = 1; i < n; i++)
	{
		for(int j = i + 1; j <= n; j++)
			if(c3[i] == c3[j]) ans++;
	}
	
	for(int i = 1; i < n; i++)
	{
		for(int j = i + 1; j <= n; j++)
			if(c2[i] == c2[j]) ans++;
	}
	
	cout << ans << endl;
}

Compilation message

beauty.cpp:18:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^

Subtask #1
0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 256 KB Output isn't correct
2 Halted 0 ms 0 KB -