#include<stdio.h>
int v[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
};
int main()
{
    FILE *fin,*fout;
    fin=fopen("cifra.in","r");
    fout=fopen("cifra.out","w");
    int t,i;
    fscanf(fin,"%d ",&t);
    char c;
    for(i=0; i<t; i++)
    {
        int x;
        c=fgetc(fin);
        char uc='a',uc2;
        while(c!='\n'&&c!=EOF)
        {
            uc2=uc;
            uc=c;
            c=fgetc(fin);
        }
        if(uc2!='a')
            x=(uc2-'0')*10+(uc-'0');
        else
            x=(uc-'0');
        fprintf(fout,"%d\n",v[x%100]);
    }
    fclose(fout);
    return 0;
}