Cod sursa(job #1817456)
Utilizator | Data | 27 noiembrie 2016 20:55:00 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.37 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
int x,n;
int pow2(int x,int n)
{
int p=1;
while(n>0)
{
if(n%2!=0)
{
p=p*x;
n--;
}
x=x*x;
n=n/2;
}
return p;
}
int main()
{
f>>x>>n;
g<<pow2(x,n);
}