Cod sursa(job #1492446)

Utilizator Vbs96Vitelaru Sebastian Vbs96 Data 27 septembrie 2015 19:17:53
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.45 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream c("lgput.in");
ofstream f("lgput.out");
long long n,p;
int exp_rapida(long long n,long long p)
{
    if(p<0) return exp_rapida(1/n,-p);
    else if(p==0) return 1;
    else if(p==1) return n;
    else if(p%2==0) return exp_rapida(n*n,p/2);
    else if(p%2!=0) return n*exp_rapida(n*n,(p-1)/2);
}
int main()
{   c>>n>>p;
    f<<exp_rapida(n,p)%1999999973;
    return 0;
}