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Submission #140994

# Submission time Handle Problem Language Result Execution time Memory
140994 2019-08-06T10:31:24 Z Shelby Beautiful row (IZhO12_beauty) C++11
0 / 100
 7 ms 504 KB 
#include <bits/stdc++.h>

using namespace std;

int dp[21][1<<20],t[21],b[21],a[21];
bool v[21][21];

int main()
{ int n,i,j,x,tmp,mask,sol=0;
scanf("%d",&n);
for(i=0;i<n;i++)
{
    scanf("%d",&a[i]);

    b[i]=__builtin_popcount(a[i]);

    x=a[i];

    while(x>0)
    {
        tmp=x%3;

        if(tmp==1) t[i]++;

        x=x/3;
    }
}

for(i=0;i<n;i++)
{
    for(j=0;j<n;j++)
    {
        if((b[i]==b[j] || t[i]==t[j]) && i!=j) v[i][j]=true;
    }
}

for(i=0;i<n;i++) dp[(1<<i)][i]=1;


for(mask=0;mask<(1<<n);mask++)
{
    for(i=0;i<n;i++)
    {
        if(mask&(1<<i))
        {
            for(j=0;j<n;j++)
            {
                if( (mask&(1<<j))==0 && v[i][j]==true )
                {
                    dp[mask|(1<<j)][j]+=dp[mask][i];
                }
            }
        }
    }
}

for(i=0;i<n;i++) sol+=dp[(1<<n)-1][i];

printf("%d\n",sol);

    return 0;
}

Compilation message

beauty.cpp: In function 'int main()':
beauty.cpp:10:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%d",&n);
 ~~~~~^~~~~~~~~
beauty.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&a[i]);
     ~~~~~^~~~~~~~~~~~

Subtask #1
0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Runtime error 7 ms 504 KB Execution killed with signal 11 (could be triggered by violating memory limits)
7 Halted 0 ms 0 KB -