#include<stdio.h>
#include<string.h>
int main()
{
   FILE *fi,*fo;
   fo=fopen("cifra.out","w");
	fi=fopen("cifra.in","r");
   int sol[]={0,1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3,4,0,3,9,4,0,7,1,0,0};
	int t,nr;
   char n[101];
   fscanf(fi,"%d",&t);
   for(;t--;)
   {
      fscanf(fi,"%s",&n);
      nr=(strlen(n)>1)?(n[strlen(n)-2]-'0')*10:0;
      nr+=(n[strlen(n)-1]-'0');
      fprintf(fo,"%d\n",sol[nr]);
   }
   return 0;
}