Cod sursa(job #917586)

Utilizator Raulr100Florian Raul Raulr100 Data 18 martie 2013 09:42:55
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.5 kb
#include <iostream>
#include <fstream>
using namespace std;

int m=1999999973;

unsigned long long putere(unsigned long long n, unsigned long long p)
{
    n%=m;
    if(p==1)
    return n;
    if(p==0)
    return 1;
    if(p&1)
        return n*putere(n*n,(p-1)/2)%m;
    return putere(n*n,p/2)%m;
}

int main()
{
    unsigned long long n,p;
    ifstream f("lgput.in");
    f >> n >> p;
    f.close();
    ofstream g("lgput.out");
    g << putere(n,p)%m;
    g.close();
    return 0;
}