Cod sursa(job #1602402)

Utilizator bullseYeIacob Sergiu bullseYe Data 16 februarie 2016 19:23:03
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.79 kb
#include <fstream>
#define MODULO 1999999973
using namespace std;

//calc n^p

long long int n, p, sol;

void read();
long long int exp (int, int);
void result();

int main(){
    read();
    sol=exp (n, p);
    result();
    return 0;
}

void read(){
    ifstream fin ("lgput.in");
    fin>>n>>p;
    fin.close();
    return;
}

long long int exp (int n, int p){
    long long int rez;
    if (p==0) return 1;
    if (p==1) return n;
    if (p%2){
        rez=exp (n, (p-1)/2)%MODULO;
        rez*=rez; rez%=MODULO;
        rez*=n; rez%=MODULO;
    }
        else{
        rez=exp (n, p/2)%MODULO;
        rez*=rez; rez%=MODULO;
        }
    return rez;
}

void result(){
    ofstream fout ("lgput.out");
    fout<<sol<<"\n";
    fout.close();
    return;
}