Cod sursa(job #1917343)

Utilizator tidehyonBosoi Bogdan tidehyon Data 9 martie 2017 12:01:01
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.55 kb
#include <iostream>
#include <fstream>

using namespace std;

ifstream fin("lgput.in");
ofstream fout("lgput.out");

#define cheie 1999999973

int n, p, a = 1;

void Citire()
{
    fin >> n >> p;
    fin.close();
}

int putere(int n, int p)
{
    while(p != 1)
    {
        if(p % 2 == 0)
        {
            p/=2;
            n*=n;
        }
        else
        {
            a*=n;
            p--;
        }
    }
    return a * n;
}

int main()
{
    Citire();
    fout << putere(n, p) % cheie << "\n";
    return 0;
}