#include<fstream>
using namespace std;
int m,i;
short 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,
                    4,0,3,9,4,0,7,1,0,0  },q;
string b;
ifstream fin("cifra.in");
ofstream fout("cifra.out");
int main(){
            fin>>m;
            for(i=0;i<m;i++) {
                                fin>>b;
                                if(b.length()==1)
                                {
                                    q=b[0]-'0';
                                }
                                else
                                {
                                    q=(b[b.length()-2]-'0')*10+(b[b.length()-1]-'0');
                                }
                                fout<<a[q]<<'\n';
 
                             }
            return 0;
          }
//My job here is done