Cod sursa(job #727478)

Utilizator visanrVisan Radu visanr Data 27 martie 2012 23:49:50
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.49 kb
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <iostream>
using namespace std;

#define r 1999999973


long long putere(long long n,long long p,long long rest)
{
     if(!p) return 1;
     if(p%2) return (n*putere(n,p-1,rest))%rest;
     long long x=putere(n,p/2,rest);
     return (x*x)%rest;
}


int main()
{
    freopen("lgput.in","r",stdin);
    freopen("lgput.out","w",stdout);
    long long n,p;
    cin>>n>>p;
    cout<<putere(n,p,r);
    return 0;
}