超时了

#include<math.h>          
#include<stdio.h>   
int main()    
{    
    int q,a[516]={0}; 
    a[0]=1; 
    scanf("%d",&q); 
    int u=q%25;  
    for(int b=1;b<=q/25;b++)    
    {
        for (int k=500;k>=0;k--)    
        if(a[k]==0) 
            continue; 
        else 
            a[k]*=33554432;   
        for(int k=0;k<=500;k++) 
        if(a[k]>=10) 
        {
            a[k+1]+=a[k]/10;a[k]%=10; 
        }
    } 
    for(int b=1;b<=u;b++)    
    {
        for(int k=500;k>=0;k--)    
        {
            if(a[k]==0)
                continue; 
            else 
                a[k]*=2;    
            if(a[k]>9)
            {
                a[k+1]+=a[k]/10;a[k]%=10; 
            }
        }  
    }
    a[0]--;    
    int t=log(2)/log(10)*q+1;  
        printf ("%d\n",t);  
    for (int k=499;k>=0;k-=50) 
    {
        for (int p=0;p<=49;p++)
            printf ("%d",a[k-p]);
        printf ("\n");
    }    
    return 0;  
}