Cod sursa(job #1349828)
Utilizator | Data | 20 februarie 2015 15:15:47 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.35 kb |
#include <iostream>
#include <fstream>
using namespace std;
long long put(long long int x, long long int y)
{
if(y==0) return 1;
if(y==1) return x;
if(y%2==0) return put(x*x,y/2);
return x*put(x*x,(y-1)/2);
}
int main()
{
ifstream in("lgput.in");
ofstream out("lgput.out");
long long int x, y;
in >> x >> y;
out << put(x,y) << '\n';
return 0;
}