Cod sursa(job #1912020)

Utilizator carina_petcuPetcu Carina carina_petcu Data 7 martie 2017 22:39:41
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.45 kb
#include <iostream>
#include <fstream>

using namespace std;

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

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

int main()
{
    int n,p;
    fin>>n>>p;
    fout<<ridicareputere(n,p)%1999999973;
    return 0;
}