#include<stdio.h>
#include<math.h>
int main()
{
	FILE *f,*g;
	int n,v[10000];
	f=fopen("cifra.in","r");
	g=fopen("cifra.out","w");
	fscanf(f,"%d",&n);
	for(int i=1;i<=n;i++)
		fscanf(f,"%d",&v[i]);
	long suma=0;
	int afis;
	long patrat;
	for(int i=1;i<=n;i++)
	{
		patrat=1;
		for(int j=1;j<=i;j++)
		{
			patrat=patrat*v[i];
		}
		suma=suma+patrat;
		afis=suma%10;
		fprintf(g,"%d \n",afis);
		
	}
return 0;
}