Cod sursa(job #2160337)

Utilizator Cristi_ChiraChira Cristian Cristi_Chira Data 11 martie 2018 12:33:27
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.5 kb
#include <iostream>
#include <fstream>
#define inf 1999999973
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
int lgput(int n, int b, int p)
{
    int A = n;
    int rez = 1;
    for(int i = 0; (1<<i) <= b; i++)
    {
        if(((1<<i) & b) > 0)
        {
            rez = 1LL * (rez * A) % p;
        }
        A = 1LL * (A * A) % p;
    }
    return rez;
}
int main()
{
    int n, p, b;
    fin >> n >> p;
    fout << lgput(n, p, inf);
    return 0;
}