#include <stdio.h>
#include <stdlib.h>


int v[110]={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 main()
{
  FILE *fin=fopen("cifra.in","r");
  FILE *fout=fopen("cifra.out","w");
  char text[150];
  fgets(text,150,fin);
  int T;
  sscanf(text,"%d",&T);
  int i;

  for(i=1; i<=T; i++)
  {
    fgets(text,150,fin);
    int cate=text[0]-'0';
    int poz=1;
    while(text[poz]!=0 && text[poz]!='\n')
    {
      cate=(text[poz-1]-'0')*10+(text[poz]-'0');
      poz++;
    }
		fprintf(fout,"%d\n",v[cate]);
  }

  return 0;
}