#include<stdio.h>   
#include<string.h>   
   
const int ul[]={0,1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3,4,0,3,9,4,0,7,1,0,0};   
   
int main()   
{   

	FILE *f=fopen("cifra.in", "r"), *g=fopen("cifra.out", "w");
    	int t,k=0,i;   
    	char s[101];   
    	scanf("%d",&t);   
    	for(i=0;i<t;i++)   
        {  
		scanf("%s",n);     
           	if(strlen(n)>1)   
   			k=(n[strlen(n)-2]-'0')*10+(n[strlen(n)-1]-'0');   
           	else  
            		k=n[strlen(n)-1]-'0';   
           	printf("%d\n",ul[k]);   
        }   
	fclose(f);
	fclose(g);
	return 0;   
}