#include<stdio.h>
#include<math.h>
int main()
{int n,s=0,t,i,j,c;
FILE *f=fopen("cifra.txt","r");
FILE *g=fopen("cifra.out","w");
fscanf(f,"%d",&t);
for(i=1;i<=t;i++){fscanf(f,"%d",&n);
		  for(j=1;j<=n;j++) s=s+pow(i,i);
		  c=s%10;
		  s=0;
		  fprintf(g,"%d",c);};
fclose(f);
fclose(g);
return 0;
}