Cod sursa(job #2947442)

Utilizator andreipirjol5Andrei Pirjol andreipirjol5 Data 26 noiembrie 2022 08:33:25
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.56 kb
#include <iostream>

using namespace std;

FILE *fin, *fout;

int lgput(int base, int exp)
{
    if(exp == 1)
        return base;

    if(exp % 2 == 1)
        return base * lgput(base * base, (exp - 1) / 2);

    if(exp % 2 == 0)
    {
        int half = lgput(base, exp / 2);

        return half * half;
    }
}

int main()
{
    fin = fopen("lgput.in", "r");
    fout = fopen("lgput.out", "w");

    int a, b;
    fscanf(fin, "%d%d", &a, &b);

    fprintf(fout, "%d", lgput(a, b));

    fclose(fin);
    fclose(fout);
    return 0;
}