Cod sursa(job #3231358)

Utilizator sd100Dolha Darius sd100 Data 25 mai 2024 22:36:16
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.51 kb
#include <iostream>
#include <fstream>
#define k 1999999973
using namespace std;

ifstream in("lgput.in");
ofstream out("lgput.out");

long long int exponent(long long int x,long long int n)
{
    if(n<0)
        return exponent((1/x)%k,-n);
    else if(n==0)
        return 1;
    else if(n%2==1)
        return x*exponent((x*x)%k,(n-1)/2);
    else if(n%2==0)
        return exponent((x*x)%k,n/2);
}
int main()
{
    long long int x,n;
    in>>x>>n;
    out<<exponent(x,n);
    return 0;
}