#include <fstream>
#include <cstring>
#include <iostream>
using namespace std;
ifstream ifs("cifra.in");
ofstream ofs("cifra.out");
int main(int argc,char **argv){
int period[]={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};
char c=0;
int T;
ifs>>T;
ifs.get();
while(T--){
int l=0;
while(c!='\n' && !ifs.eof()){
ifs.get(c);
if(c!='\n' && !ifs.eof())
l++;
}
if(l>=2){
if(ifs.eof()){
ifs.clear();
ifs.unget();
ifs.unget();
}
else{
ifs.unget();
ifs.unget();
ifs.unget();
}
ofs<<period[ifs.get()+ifs.get()*10-528]<<endl;
ifs.get();
if(!ifs.eof()){
ifs.get(c);
l++;
}
}
else
if(ifs.eof()){
ifs.clear();
ifs.unget();
}
else{
ifs.unget();
ifs.unget();
}
ofs<<period[ifs.get()-48]<<endl;
ifs.get();
if(!ifs.eof()){
ifs.get(c);
l++;
}
}
//delete[] s;
ofs.close();
return 0;
}