#include<fstream>
#include<string>
#include<iostream>
using namespace std;
int x[2];
ifstream in("cifra.in");
ofstream out("cifra.out");
int citire()
{
     int i;
     string s;
     in>>s;
     i=s.length()-1;
     x[0] = s[i]-'0';
     x[1]=s[i-1]-'0';
     x[0]=x[0]*10+x[1];
     return x[0];
}
int main (){
    long long int i,j,t;
    long long int a[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};
in>>j;
for(i=0;i<j;i++){
t=citire();
out<<a[t];
}
return 0;
}