Cod sursa(job #1376369)

Utilizator stanciuandreiStanciulescu Andrei stanciuandrei Data 5 martie 2015 17:12:54
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.5 kb
#include <iostream>
#include <fstream>
#define mod 1999999973
using namespace std;
long long res;
long long power(long long n, long long p)
{
    if(p==0)
        return 1;
    if(p==1)
        return n;
    if(p%2==0)
        return power(n*n%mod, p/2);
    else
        return power(n*n%mod, (p-1)/2);
}
int main()
{
    ifstream in("lgput.in");
    ofstream out("lgput.out");
    long long n, p;
    in>>n;
    in>>p;
    res=1;
    res=power(n, p);
    out<<res<<"\n";
    return 0;
}