#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;
}