Cod sursa(job #495593)

Utilizator carol1997ursu carol carol1997 Data 25 octombrie 2010 21:29:01
Problema Cifra Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.3 kb
Raporteaza aceasta sursa 
#include<stdio.h>
#include<math.h>
int main()
{
	freopen("ucif.in","r",stdin);
	freopen("ucif.out","w",stdout);
	int n,i=1,k;
	long s=0,p,r;
	scanf("%d",&n);
	while(i<=n)
	{
		r=i%4;
	if(r==0)
		r=4;
	p=pow(i%10,r);
	s=(s+p%10)%10;
	i++;
	}
	k=s%10;
	printf("%d",k);
	return 0;
}