Cod sursa(job #83184)

Utilizator sanaDascalu Laurentiu sana Data 10 septembrie 2007 12:45:32
Problema Factorial Scor 10
Compilator c Status done
Runda Arhiva de probleme Marime 0.33 kb
Raporteaza aceasta sursa 
#include <stdio.h>

int main(){
	FILE *fin,*fout;
	long int P;
	long int N;
	
	fin=fopen("fact.in","rt");
	fout=fopen("fact.out","wt");
	
	fscanf(fin,"%ld",&P);
	
	if (P==0){
		N=1;
		fprintf(fout,"%ld",N);
		return 0;
	}
	
	N=P*5;
	
	while(P%5==0){
		P/=5;
		N-=5;
	}
	
	fprintf(fout,"%ld",N);
	
	return 0;
}