Cod sursa(job #1118287)

Utilizator YoYoxxIftimesei Ioan YoYoxx Data 24 februarie 2014 09:39:07
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.34 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream in("lgput.in");
ofstream out("lgput.out");
int n,k;
int exp(int x,int k)
{
    if(k==0) return 1;
    if(k==1) return x%1999999973;
    if(k%2==0) return exp(x*x,k/2);
    if(k%2==1) return x*exp(x*x,(k-1)/2);
}


int main()
{
    in>>n>>k;
    out<<exp(n,k);
    return 0;
}