Cod sursa(job #862414)
Utilizator | Data | 22 ianuarie 2013 18:08:05 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.39 kb |
#include <iostream>
#include <fstream>
using namespace std;
long n,p;
long putere(long a,long p)
{
long long w;
if (p==0)
return 1;
if (p%2==0)
{
w=putere(a,p/2);
return (w*w);
}
w=putere(a,p-1);
return (w*a);
}
int main()
{
ifstream f("lgput.in");
ofstream g("lgput.out");
f>>n>>p;
g<<putere(n,p);
return 0;
}