Cod sursa(job #2484380)

Utilizator Robert.BrindeaBrindea Robert Robert.Brindea Data 31 octombrie 2019 01:17:23
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.53 kb
#include <iostream>
#include <fstream>

using namespace std;

const int MOD = 1999999973;

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

long long putere(long long a, long long p)
{
    long long rez, fact;
    rez = 1;
    fact = a;
    for(int bit = 0; p >> bit; bit++)
    {
        if((p>>bit) & 1)
            rez = (1LL*rez*fact)%MOD;
        fact = (1LL*fact*fact)%MOD;
    }
    return rez;
}

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