Cod sursa(job #2493657)

Utilizator VladMxPMihaila Vlad VladMxP Data 16 noiembrie 2019 17:43:09
Problema Ridicare la putere in timp logaritmic Scor 30
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.5 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
unsigned long int n,p,r=1;
int putere(int n,int p)
{
    int ok=0;
    long long r2;
    if(p==0)return 1;
    if(p==1)return n;
    if(p%2==1)p--,ok=1;
    if(p)
    {
        r2=(putere(n,p/2))%1999999973;
        if(ok)return (r2*r2*n)%1999999973;
        else return (r2*r2)%1999999973;
    }
}
int main()
{
    fin>>n>>p;
    putere(n,p);
    fout<<putere(n,p);
}