#include <stdio.h>
#include <string.h>
using namespace std;

const int pattern[] = {
    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()
{
    char arr[102];
    int var = 0, len, T;

    FILE* in = fopen("cifra.in", "r");
    FILE* out = fopen ("cifra.out", "w");

    fscanf(in, "%d", &T);
    for (int i = 0; i < T; i++) {
        fscanf(in, "%s", arr);
        len = strlen(arr);

        var = ((int)arr[len-1] - '0');
        var += (len>1) ? 10*((int)arr[len-2] - '0') : 0;
        fprintf(out, "%d\n", pattern[var]);
    }
    
    fclose(in);
    fclose(out);
    return 0;
}