#include <stdio.h>
#include <string.h>

using namespace std;
int a[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};

int main()
{
    freopen("cifra.in","r",stdin);
    freopen("cifra.out","w",stdout);
    char n[101];
    int t,i;
    scanf("%d",&t);
    for(i=1;i<=t;i++)
    {
        scanf("%s",n);
        int q=strlen(n);
        int las= n[q-1]-'0';
        if(q>1)
            las+= (n[q-2]-'0')*10;
        printf("%d\n",a[las]);
    }

    return 0;
}