Cod sursa(job #1462440)
Utilizator | Data | 18 iulie 2015 02:40:55 | |
---|---|---|---|
Problema | Factorial | Scor | 5 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.56 kb |
#include <fstream>
using namespace std;
ifstream in("fact.in");
ofstream out("fact.out");
int main(){
long long n,i,j,s=1,p=-5;
in>>n;
long long aux;
aux=n;
aux=aux*5;
if(n==0)
{
out<<"-1";
return 0;
}
for(i=1;i<=100000000;i++)
{
s=s*5;
p=p+5;
if(s>aux)
{
out<<aux;
return 0;
}
if(s==n)
{
out<<"-1";
return 0;
}
if(s<aux)
{
aux=aux-p;
}
}
}