Cod sursa(job #611517)

Utilizator Luncasu_VictorVictor Luncasu Luncasu_Victor Data 1 septembrie 2011 20:26:56
Problema Factorial Scor 75
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.3 kb
Raporteaza aceasta sursa 
#include <fstream>
std::ifstream f;
std::ofstream g;

int main(){
    register int p,n=0,x;
    f.open("fact.in");
    g.open("fact.out");
    f>>p;
    while(p-4>0){n+=25;x=n;p-=4;
    while(x%5==0){p--;x/=5;};};
    if(p>0)n+=(p*5);
    g<<((p<0)?-1:n);
    f.close();
    g.close();
}