#include <fstream.h>

int main()
{
	fstream f("cifra.in");
	ofstream g("cifra.out");
	int i,t,nr;
	char v[1001];
	int s[]={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}; 	
	
	f>>t;
	for(i=1;i<=t;i++)
	{
		f>>v;
		
		nr=v[strlen(v)-1]-48;
		if(strlen(v)>1)
			nr+=(v[strlen(v)-2]-48)*10;
		
		g<<s[nr]<<"\n";
	}
	f.close();
	g.close();
	return 0;
}