Cod sursa(job #895606)

Utilizator CiurezAndreiCiurez Marius-Andrei CiurezAndrei Data 27 februarie 2013 11:56:57
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.4 kb
#include <fstream>
#include <string.h>

const int m = 1999999973;

using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
long long r,n,p;
int main()
{
    r=1;
    f >> n >> p;
    while(p!=0){
    if(p%2==0){
        n=(n*n)%m;
        p=p/2;
    }
    else{
       r=(r*n)%m;
        p-=1;
        n=(n*n)%m;
        p=p/2;
    }
    }
    g<<r;
    return 0;
}