Cod sursa(job #3152747)

Utilizator TeroroTero ro Teroro Data 26 septembrie 2023 18:03:59
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.58 kb
#include <fstream>

using namespace std;

ifstream cin("lgput.in");
ofstream cout("lgput.out");

long long modulo = 1999999973;

unsigned long long lgput(unsigned long long n, unsigned long long k)
{
    if(n < 0)
    {
        return lgput(1/n, -k) % modulo;
    }
    if(k == 0)
        return 1;
    if(k == 1)
        return n;
    if(k % 2 == 0)
        return (lgput(n*n, k/2)) % modulo;
    else
        return n*(lgput(n*n, (k-1) / 2)) % modulo;
}

int main()
{
    unsigned long long n, k;
    cin >> n >> k;
    cout<<lgput(n, k)%modulo;
    return 0;
}