Cod sursa(job #729284)

Utilizator Galax27Tapean Constantin Galax27 Data 29 martie 2012 14:11:21
Problema Factorial Scor 50
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.31 kb
Raporteaza aceasta sursa 
#include<iostream>
#include<fstream>
using namespace std;
ifstream f("fact.in");
ofstream g("fact.out");
int main()
{long p=0,i=0,c=0,a=0;
 f>>p;
 for(i=5,c=0;c<p;i+=5)
 {a=i;
  while(a%5==0)
  {c+=1;
   a/=5;
  }
 }
 if(c==p)
    if(p!=0)
	   g<<i-5;
    else
	   g<<1;
 else
	g<<-1;
 return 0;
}