#include <fstream>   
#include <iostream>   
  
using namespace std;   
  
int lastdigit[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 main()   
{   
    fstream f("cifra.in",ios::in);   
    fstream f2("cifra.out",ios::out);   
    int t;   
    char n[102];   
    f>>t;   
  
    for(int i=0;i<t;i++)   
    {   
        f>>n;   
        int l = strlen(n);   
        int nr = (n[l-1]-'0');   
        if(l>1) nr+=(n[l-2]-'0')*10;   
  
        f2<<lastdigit[nr]<<"\n";   
    }   
  
    f.close();   
    f2.close();   
    return 0;   
}  
#include <fstream>
#include <iostream>

using namespace std;

int lastdigit[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 main()
{
    fstream f("cifra.in",ios::in);
    fstream f2("cifra.out",ios::out);
    int t;
    char n[102];
    f>>t;

    for(int i=0;i<t;i++)
    {
        f>>n;
        int l = strlen(n);
        int nr = (n[l-1]-'0');
        if(l>1) nr+=(n[l-2]-'0')*10;

        f2<<lastdigit[nr]<<"\n";
    }

    f.close();
    f2.close();
    return 0;
}