Cod sursa(job #1021192)

Utilizator alex-florinHarbuzariu Alexandru Florin alex-florin Data 3 noiembrie 2013 14:21:20
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.5 kb
#include <fstream>
#define T 1999999973;
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
long long putere(long long a, long long b)
{
    long long p=1;
    while(b)
    {
        if(b%2!=0)
        {
            p=(p*a)%T;
            b--;
        }
        if(b)
        {
            a=(a*a)%T;
            b=b/2;
        }
    }
    return p;
}
int main()
{
    long long n, p;
    f>>n>>p;
    g<<putere(n, p);
    f.close(); g.close();
    return 0;
}