Cod sursa(job #2885790)

Utilizator CodauAlexandruCodau Alexandru CodauAlexandru Data 6 aprilie 2022 16:39:26
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.56 kb
#include <iostream>
#include <fstream>
using namespace std;

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

const int MOD = 1999999973;
int n, p;

int putere(int a, int b) {
    if (b == 1) {
        return a % MOD;
    } else if (b == 0) {
        return 1;
    }
    if (b % 2 == 0) {
        return (1LL * putere(a, b / 2) % MOD) * (1LL * putere(a, b / 2) % MOD);
    } else {
        return (1LL * putere(a, b - 1) % MOD) * (1LL * putere(a, 1) % MOD);
    }
}

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