Cod sursa(job #2955506)

Utilizator juniorOvidiu Rosca junior Data 17 decembrie 2022 11:37:05
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.4 kb
#include <fstream>
#include <iostream>

using namespace std;

ifstream fi("lgput.in");
ofstream fo("lgput.out");
int m = 1999999973, n, e, r;
long long p;

int main() {
    fi >> n >> e;
    r = 1;
    for (p = n; e > 0; e >>= 1) {
        if (e & 1)
            r = r * p;
        p = p * p;
    }
    fo << r;
    return 0;
}
/*

(a * b) mod p = ((a mod p) * (b mod p)) mod p

*/