#include<stdio.h>
FILE * f=fopen("cifra.in","r");
FILE * g=fopen("cifra.out","w");
int t,i,n,j,s=0,uc; 
int main()
{
	fscanf(f,"%d",&t);
	for(i=1;i<=t;i++){
		fscanf(f,"%d",&n);
		for(j=1;j<=n;j++)
			s=((j*(j+1)*(2*j+1))/6);
			uc=s%10;
		    fprintf(g,"%d ",uc);
			fprintf(g,"\n");}
	
	fclose(f);
	fclose(g);
	return 0;
}