Cod sursa(job #1470293)

Utilizator ancabdBadiu Anca ancabd Data 10 august 2015 18:57:37
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.53 kb

#include <fstream>
using namespace std;
#define m  1999999973
int n, p;
long long ridicare(int x, int y)
{
    if(y == 0)
        return 1;
    if(y == 1)
        return x % m;
    if(y % 2 == 0) {

        long long aux = ridicare(x, y / 2);
        return (aux * aux) % m;
    }
    if(y % 2 == 1)
        return (x * ridicare(x , y - 1)) % m;
}
ifstream fin("lgput.in");
ofstream fout("lgput.out");

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