Cod sursa(job #2139144)

Utilizator sauron275Andrei Radu sauron275 Data 22 februarie 2018 10:09:40
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.53 kb
#include <iostream>
#include <fstream>

using namespace std;
const int MOD = 1999999973;
ifstream f("lgput.in");
ofstream g("lgput.out");

int putere(long long a, long long p)
{
    long long val = 1;
    a %= MOD;
    while(p > 0)
    {
        while(p % 2 == 0)
        {
            a *= a;
            a %= MOD;
            p /= 2;
        }
        val *= a;
        val %= MOD;
        p--;
    }
    return val;
}

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