Cod sursa(job #267609)

Utilizator A-TeamKovago L si Albert I A-Team Data 27 februarie 2009 18:51:06
Problema Factorial Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.27 kb
Raporteaza aceasta sursa 
#include<stdio.h>
long int a;
unsigned long b;
FILE *in=fopen("fact.in","r"),*out=fopen("fact.out","w");
void main()
{
	fscanf(in,"%ld",&a);
	if((a-5)%6==0&&(a-5)>0) fprintf(out,"-1");
	else
	{
		b=a*5;
		b-=b/25*5;
		fprintf(out,"%ld",b);
	}
	fcloseall();
}