#include <cstdio>
#include <cstring>
using namespace std;
int cif[101]={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 x[150];
int main()
{
    freopen("cifra.in","r",stdin);
    freopen("cifra.out","w",stdout);
    int n,t,i,j,k;
    scanf("%d\n",&t);
    for(i=0;i<t;i++)
    {
        fgets(x,150,stdin);
        n=strlen(x)-1;
        k=0;
        if(n==1) k=x[0]-'0';
        else if(n==2) k=(x[0]-'0')*10+x[1]-'0';
        else
        {
            for(j=n-2;j<n;j++)
            {
                k=k*10+x[j]-'0';
            }
        }
        printf("%d\n",cif[k]);
    }
}