Cod sursa(job #950149)

Utilizator RadEmanuelRad Emanuel RadEmanuel Data 15 mai 2013 22:30:53
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.44 kb
#include<fstream>
#define lli long long int
#define mod %1999999973
using namespace std;

ifstream fin("lgput.in");
ofstream fout("lgput.out");
lli n,p;

lli f(lli n, lli p)
{
    if(p==0)
        return 1 mod;
    else if(p==1)
        return n mod;
    else if(p%2)
        return (n*f(n*n,(p-1)/2)) mod;
    else if(!(p%2))
        return (f(n*n,p/2)) mod;
}

int main()
{
    fin>>n>>p;
    fout<<f(n,p);
    return 0;
}