Cod sursa(job #1671937)

Utilizator leraValeria lera Data 2 aprilie 2016 11:39:51
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.48 kb
#include <iostream>
#include <fstream>
using namespace std;

int const mod=1999999973;
long long lgpow(int a,int n)
{
    if(n==0)
        return 1;
    int semipow=lgpow(a,n/2);
    semipow=((long long)semipow*semipow)%mod;
     if(n%2==0)
        return semipow;
    else
        return ((long long)semipow*a)%mod;
}
int main()
{
    ifstream fin("lgput.in");
    ofstream fout("lgput.out");
    int N,P;
    fin>>N>>P;
    fout<<lgpow(N,P)<<'\n';
    return 0;
}