Cod sursa(job #1367530)
Utilizator | Data | 1 martie 2015 22:23:44 | |
---|---|---|---|
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 lgp(int a, int b)
{
if(b==0)
return 1;
if(b==1)
return a;
if(b%2==0)
return lgp(a,b/2)*lgp(a,b/2);
else
return lgp(a,b/2)*lgp(a,b/2)*a;
}
int main()
{
int a,b;
f>>a>>b;
g<<lgp(a,b);
return 0;
}