#include <fstream>
#include <cstring>
using namespace std;
ifstream fin("cifra.in");
ofstream fout("cifra.out");
int table[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 T;
int main()
{
    fin >> T;fin.get();
    for(int i=0,N;i<T;i++)
    {
        char s[105];
        fin.getline(s, 105);
        const int len = strlen(s);
        if(__builtin_expect(len>=2, 1))
            fout << table[(s[len-2]-'0')*10+s[len-1]-'0'] << '\n';
        else
            fout << table[s[len-1]-'0'] << '\n';
    }

    return 0;
}