Cod sursa(job #1113250)

Utilizator lupvasileLup Vasile lupvasile Data 20 februarie 2014 14:59:20
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.4 kb
#include <iostream>
#include <fstream>

using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
#define mod 1999999973
long long n,p;
long long pw(long long n,long long k)
{
    int i;
    long long sol(0);
    for(i=0;(1<<i)<=k;++i){
    if ((1<<i)&k) sol=(sol+n)%mod;
    n=n*n%mod;
    }
    return sol%mod;
}
int main()
{
   f>>n>>p;
   g<<pw(n%mod,p);
    return 0;
}