Cod sursa(job #1897653)

Utilizator gabrielamoldovanMoldovan Gabriela gabrielamoldovan Data 1 martie 2017 16:56:41
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.45 kb
#include <iostream>
#include <fstream>

#define mod 1999999973

using namespace std;

ifstream f("lgput.in");
ofstream g("lgput.out");

int log(int x, int n)
{
    long long p = 1;
    for(int i = 0; (1<<i) <= n; ++i)
    {
        if(((1<<i) & n) > 0)
        {
            p = (p * x) % mod;
        }
        x = (x * x) % mod;
    }
    return p;
}

int main()
{
    int n, p;
    f >> n >> p;
    g << log(n, p);
    return 0;
}