Cod sursa(job #2043626)

Utilizator gundorfMoldovan George gundorf Data 20 octombrie 2017 12:21:30
Problema Ridicare la putere in timp logaritmic Scor 30
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");
int c=1999999973;

long long exp_lg (long long x,long long p)
{
    long long z;
    if (p==1) return x;
    if (p==0) return 1;
    z=exp_lg(x,p/2);
    if (p%2==0) return ((z%c)*(z%c))%c;
    else return ((z%c)*(z%c)*(x%c))%c;

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