#include <stdio.h>   
#include <stdlib.h>   
#include <math.h>        
#include<string.h>   
        
  
int rez[100]={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};           
char v[101];        
int a,b,l,c,i;        
int main()        
{        
FILE *in,*out;        
in=fopen("cifra.in","r");        
out=fopen("cifra.out","w");        
     int t;        
     fscanf(in,"%d",&t);        
     for(i=1;i<=t;i++)        
        {        
        fscanf(in,"%s",v);        
        l=strlen(v);        
    a=v[l-1]-48;   
    b=v[l-2]-48;        
        if(l>1)        
            c=b*10+a;        
        else c=a;     
            fprintf(out,"%d\n",rez[c]);        
        }        
fclose(in);   
fclose(out);        
return 0;   
}