#include <cstdio>
#include <cstring>
using namespace std;

int r,n,i,p[13][13];
int v[]={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, 0};
char s[256];
int main()
{
    freopen("cifra.in", "r", stdin);
    freopen("cifra.out", "w", stdout);
    scanf("%d", &n);
    for(i=1;i<=n;++i){
        scanf("%s", s);
        int l=strlen(s);
        r=0;
        if(l>=2)
        for(int i=l-2;i<=l-1;++i)
            r=r*10+s[i]-'0';
        else
            r=s[0]-'0';
        printf("%d\n", v[r%100]);
    }
    return 0;
}