Cod sursa(job #1014413)
Utilizator | Data | 22 octombrie 2013 17:50:50 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.35 kb |
#include<iostream>
using namespace std;
int a,n;
int putere(int a,int n)
{
int b=a*a;
if(n==1) return a;
if(n==2) return b;
if(n>2)
{
if(n%2) return a*putere(a,(n-1)/2)*putere(a,(n-1)/2);
else return putere(a,n/2)*putere(a,n/2);
}
}
int main()
{
cin>>a>>n;
cout<<putere(a,n);
return 0;
}