#include "fstream"
std::ifstream in("cifra.in");
std::ofstream out("cifra.out");
int Sol[]={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 ()
{
	int n1,Num,i,p,n;
	char numar[101];
	in>>p;
	for(i=0;i<p;i++)
	{
		in>>numar;
		int x=strlen(numar);
		if(x>1){
		n=numar[x-1]-48;
		n1=numar[x-2]-48;
		Num=n1*10+n;}
		else
			Num=n;
		out<<Sol[Num]<<"\n";
	}
	in.close ();
	out.close ();
	return 0;
}