Cod sursa(job #2940275)

Utilizator rapidu36Victor Manz rapidu36 Data 15 noiembrie 2022 10:47:55
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.52 kb
#include <fstream>

using namespace std;

const int MOD = 1999999973;

int putere(int a, int n)
{
    int p = 1;
    while (n != 0)
    {
        if (n % 2 != 0)//(n & 1) != 0
        {
            p = (long long)p * a % MOD;
        }
        a = (long long)a * a % MOD;
        n /= 2;// n <<= 1
    }
    return p;
}

int main()
{
    ifstream in("lgput.in");
    ofstream out("lgput.out");
    int a, n;
    in >> a >> n;
    out << putere(a, n);
    in.close();
    out.close();
    return 0;
}