#include "stdio.h"
#include "string.h"
 
int main()
{
    
   int v[]={0,1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3,4,0,3,9,4,0,7,1,0};
   int i,t,lungime,baza,exponent; 
    FILE *f,*g;   
    char n[101];
    f=fopen("cifra.in","r");
    g=fopen("cifra.out","w");
   fscanf(f,"%d",&t);    
    for (i=0;i<t;i++)
        {
            fscanf(f,"%s",&n);
            lungime=strlen(n);             
            if (lungime>1)
                    {
                    baza=n[lungime-1]-'0';
                    exponent=(n[lungime-2]-'0')*10+baza;
                    }               else exponent=baza=n[lungime-1]-'0';
                fprintf(g,"%d\n",v[exponent]);
}
   fclose(g);
    return 0;
}