#include <stdio.h>
#include <stdlib.h>
#include <string.h>
  
int main()
{
     FILE *inFile;
 FILE *outFile;
 inFile = fopen("cifra.in","r");
 outFile = fopen("cifra.out","w");
 
int n,l,k;
int v[100] = {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};
char s[105];
 
    fscanf(inFile, "%d",&n);
    for (l=1;l<=n;l++){
    fscanf(inFile, "%s",s);
    if (strlen(s)!=1) k=(s[strlen(s)-2]-'0')*10+s[strlen(s)-1]-'0';
                else k=s[strlen(s)-1]-'0';
        fprintf(outFile,"%d\n",v[k-1]);
    }
    fclose(inFile);
    fclose(outFile);
}