Cod sursa(job #2001593)

Utilizator vasilescutiberiu121Vasilescu Costin-Tiberiu vasilescutiberiu121 Data 17 iulie 2017 10:01:36
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.55 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
int main()
{
    long long n, p , pwr  , np = 1;
    fin >> n >> p;
    pwr = n;
    while(p!=0)
    {
        if(p%2==0)
        {
            pwr *= pwr;
            pwr %= 1999999973;
            p/=2;
        }
        else
        {
            np*=pwr;
            np %= 1999999973;
            pwr *= pwr;
            pwr %= 1999999973;
            p=(p-1)/2;
        }
    }
    fout << np;
    return 0;
}