Cod sursa(job #1503923)

Utilizator Alex1234Alexandru Posea Alex1234 Data 17 octombrie 2015 09:07:05
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.51 kb
#include <iostream>
#include <fstream>
using namespace std;
int mod = 1999999973;
int putere(int n,int p)
{
    if(p==1)
    {
        return n%mod;
    }
    else if(p==2)
    {
        return n*n%mod;
    }
    else if(p%2==0)
    {
        return putere(n*n,p/2)%mod;
    }
    else if(p%2==1)
    {
        return n*putere(n*n,p/2)%mod;
    }
}
int main()
{
    ifstream fin ("lgput.in");
    ofstream fout ("lgput.out");
    int n,p;
    fin>>n>>p;
    fout<<putere(n,p);
    return 0;
}