#include<fstream.h>
#include<math.h>
#include<string.h>
#include<stdlib.h>
int main(){
ifstream fin("cifra.in");
ofstream fout("cifra.out");
long long N,nr,x,y,z;
char b[130];
const 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};
fin>>N;
fin.getline(b,3);
for (int i=0;i<N;i++){
    fin.getline(b,110);
    z=strlen(b);
    if (z>1)
    x=b[z-2]-'0';
     else
       x=0;
    y=b[z-1]-'0';
    nr=x*10+y;
    fout<<a[nr%100]<<"\n";}
fin.close();
fout.close();
return 0;
}