Cod sursa(job #1903735)

Utilizator feli2felicia iuga feli2 Data 5 martie 2017 12:43:19
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.44 kb
#include <iostream>
#include <fstream>

using namespace std;

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

const int MOD=1999999973;
long long x, p;

long long pow(long long x,long long p)
{
    long long rez=1;
    for(int i=0;(1<<i)<=p;i++)
    {
        if(p&(1<<i))
            rez=(x*rez)%MOD;
        x=(x*x)%MOD;
    }
    return rez;
}

int main()
{
    fin>>x>>p;
    fout<<pow(x, p);
    return 0;
}