oj.uz

답안 #90114

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
90114 2018-12-20T11:12:17 Z Aydarov03 아름다운 순열 (IZhO12_beauty) C++14
0 / 100
 575 ms 580 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
int a[30];
int st[30];
bool used[30];
int n , ans;
int was[ 30 ][ 30 ];

map <int,int> bin;
map <int,int> ter;



void rec( int k )
{

	if( k == n + 1 )
	{
		ans++;
		return;
	}
	
	int ls = ans;
	
	for(int i = 1; i <= n; i++)
	{
		if( k == 1 || ( !used[i] && ( ter[a[i]] == ter[st[k-1]] || bin[a[i]] == bin[st[k-1]] ) )  )
		{	
			st[k] = a[i];
			used[ i ] = true;
			rec( k + 1 );
			
			if( ls != ans )
			{
				int sm = a[i];
				int raz = ans - ls;
				while( 1 )
				{
					i++;
					if( sm == a[i] )ans += raz;
					else break;
				}
				i--;
			}
			
			used[ i ] = false;
		}
	}
}

void to_bin( int a )
{
	int one = 0;
	int A = a;

	while( a > 0 )
	{
		one += ( a % 2 == 1);
		a /= 2;
	}

	bin[ A ] = one;
}

void to_ter( int a )
{
		int one = 0;
		int A = a;
		while( a > 0 )
		{
			one += ( a % 3 == 1);
			a /= 3;
		}

	ter[ A ] = one;
}





main()
{
	scanf("%lld" , &n);
	for(int i = 1; i <= n; i++)scanf("%lld" , &a[i]);
	sort( a + 1 , a + n + 1 );



	for(int i = 1; i <= n; i++)
	{
		to_bin( a[i] );
		to_ter( a[i] );
	}
	
	
	rec(1);
	
	
	printf("%lld" , ans);

}

Compilation message

beauty.cpp:83:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
beauty.cpp: In function 'int main()':
beauty.cpp:85:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld" , &n);
  ~~~~~^~~~~~~~~~~~~
beauty.cpp:86:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i = 1; i <= n; i++)scanf("%lld" , &a[i]);
                             ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 1 ms 508 KB Output is correct
3 Correct 2 ms 508 KB Output is correct
4 Correct 2 ms 508 KB Output is correct
5 Correct 2 ms 508 KB Output is correct
6 Correct 9 ms 508 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 575 ms 580 KB Output is correct
9 Incorrect 3 ms 580 KB Output isn't correct
10 Halted 0 ms 0 KB -