#include<stdio.h>
main()
{
    int i,j,n,s=1,a;
    while(scanf("%d",&n) != EOF)
    {
        for(i=0;i<n;i++)
        {
            scanf("%d",&a);
            for(j=0;j<a;j++)
            {
                s=s*a;
            }
            s=s-(s/10*10);
            printf("%d\n",s);
            s=1;
        }
        n=0;
    }
}