Cod sursa(job #2143309)

Utilizator AlexandruPaulSirbu Alex AlexandruPaul Data 25 februarie 2018 20:05:52
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.44 kb
#include <iostream>
#include <fstream>
using namespace std;
const long long rest=1999999973;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long a,b;
long long exp(long long a,long long b)
{
    if (b==0)
        return 1;
    else
    {
        if (b%2==0)
            return exp(a*a%rest,b/2);
        return exp(a*a%rest,b/2)*a%rest;
    }
}
int main()
{
    fin>>a>>b;
    fout<<exp(a,b)%rest;
    return 0;
}