#include<stdio.h>
#include<string.h>
int n,c[100]={0,1,5,2,8,3,9,1,7,6,7,8,2,9,5,0,6,8,4,3,4,5,9,6,2,7,3,5,1,0,1,2,6,3,9,4,0,2,8,7,8,9,3,0,6,1,7,9,5,4,5,6,0,7,3,8,4,6,2,1,2,3,7,4,0,5,1,3,9,8,9,0,4,1,7,2,8,0,6,5,6,7,1,8,4,9,5,7,3,2,3,4,8,5,1,6,2,4,0,9};
char s[101];
void solve(){
	int i,x,l,nr;
	scanf("%d",&n);
	for(i=1; i<=n; ++i){
		scanf("%s",&s);
		l=strlen(s);
		if(l>1)
			x=(s[l-2]-'0')*10+(s[l-1]-'0');
		else
			x=s[l-1]-'0';
        printf("%d\n",c[x%100]);}}
int main(){
    freopen("cifra.in","r",stdin);
    freopen("cifra.out","w",stdout);
    solve();
    return 0;}