Cod sursa(job #2847044)

Utilizator vladutzu_finutzuVlad Cacenschi vladutzu_finutzu Data 10 februarie 2022 08:36:22
Problema Ridicare la putere in timp logaritmic Scor 50
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.6 kb
#include <fstream>
using namespace std;
ifstream cin("lgput.in");
ofstream cout("lgput.out");
long long n, p;
const unsigned long long MOD = 1999999973;
unsigned long long logPow(long long n, long long p)
{
    if(p == 0)
        return 1;
    
    if(p % 2 == 0)
    {
        unsigned long long k = logPow(n, p/2) % MOD;
//        cout<<k<<" ";
        return (k * k) % MOD;
    }
    
    unsigned long long k = logPow(n, (p-1) / 2) % MOD;
//    cout<<k<<" ";
    return ((n % MOD) * (k * k) % MOD) % MOD;
}
int main(int argc, const char * argv[]) {
    cin>>n>>p;
    
    cout<<logPow(n, p);
    return 0;
}