Cod sursa(job #2040896)

Utilizator elenaisaiaElena Isaia elenaisaia Data 16 octombrie 2017 17:33:00
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.47 kb
#include <iostream>
#include <fstream>
#define MOD 1999999973
using namespace std;
int putere(int a,int b)
{
    int p=1;
    while(b)
    {
        if(b%2)
        {
            b--;
            p*=a;
        }
        else
        {
            a*=a;
            b/=2;
        }
    }
    return p;
}
int main()
{
    int a,b;
    ifstream fin("lgput.in");
    ofstream fout("lgput.out");
    fin>>a>>b;
    fout<<putere(a,b)%MOD;
    return 0;
}