Cod sursa(job #2356325)

Utilizator bogdan_modoleaBogdan Modolea bogdan_modolea Data 26 februarie 2019 16:55:17
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.5 kb
#include <bits/stdc++.h>
#define MOD 1999999973
using namespace std;

ifstream fin("lgput.in");
ofstream fout("lgput.out");

long long putere(int x,long long int p)
{
    long long int nr=1;
    while(p>=1)
    {
        if(p%2)
        {
            nr=(nr*x)%MOD;
            p--;
        }
        else
        {
            x=(x*x)%MOD;
            p/=2;
        }
    }
    return nr%MOD;
}

int main()
{
    int a,p;
    fin>>a>>p;
    fout<<putere(a,p)%MOD;
    return 0;
}