Cod sursa(job #2285907)

Utilizator DeniszPop Denis Denisz Data 19 noiembrie 2018 15:00:17
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.45 kb
#include <iostream>
#include <math.h>
#include <fstream>

int ridic_put(int a,int b){
if (b<0)return ridic_put(1/a,-b);
else if (b==0)return 1;
else if (b==1)return a;
else if (b%2==0)return ridic_put(a*a,b/2);
else if (b%2!=0)return a*ridic_put(a*a,(b-1)/2);
}

using namespace std;

int main()
{
    long long a,b;
    ifstream fin("lgput.in");
    ofstream fout("lgput.out");
    fin>>a>>b;
    fout<<ridic_put(a,b);
    return 0;
}