Cod sursa(job #172893)
Utilizator | Ivanov George Bogdan ivanov.george | Data | 6 aprilie 2008 21:27:11 |
---|---|---|---|
Problema | Factorial | Scor | 35 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.56 kb |
//FACTORIAL
#include<iostream.h>
#include<fstream.h>
long putere5(int k){
if(k ==0) return 1;
return 5*putere5(k-1);
}
int main(){
long n,p,i,j,k;
ifstream in("fact.in");
ofstream out("fact.out");
in>>p;
//cin>>p;
n = 0;i = 0;
while(i<p){
n+=5;
i++;
for(j = 2;j<=20;j++)
if(n%putere5(j)==0) i++;
else break;
}
out<<n<<endl;
//getch();
in.close();
out.close();
return 0;
}