#include "stdio.h"
#include "string.h"

int main()
{
	
	int v[]={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 i,t,lungime,baza,exponent;
	
	FILE *f,*g;
	
	char n[101];
	
	
	f=fopen("cifra.in","r");
	g=fopen("cifra.out","w");
	
	//Citim pe T;
	
	fscanf(f,"%d",&t);
	
	for (i=0;i<t;i++)
		{
			
			//Citim cele N numere , ca sir de caractere
			fscanf(f,"%s",&n);
			
			lungime=strlen(n);
			
			if (lungime>1)
					{
					baza=n[lungime-1]-'0';
					exponent=(n[lungime-2]-'0')*10+baza;
					}
				else exponent=baza=n[lungime-1]-'0';
				
				
				fprintf(g,"%d\n",v[exponent]);
				
			
		}
	
	
	
	
	
	fclose(g);
	
	return 0;
	
	
	
	
	
	
	
}