Cod sursa(job #2569244)

Utilizator KataIsache Catalina Kata Data 4 martie 2020 11:37:39
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.55 kb
#include <fstream>

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

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

long long int put(int n, int p)
{
    if(p==1) return n;
    long long int x;
    if(p%2==0)
    {
        x=put(n,p/2);
        x%= 1999999973;
        return (x*x)% 1999999973;
    }
    else
    {
        p--;
        x=put(n,p/2);
        x%= 1999999973;
        return (((x*x)% 1999999973)*n)% 1999999973;
    }
}