Cod sursa(job #2760006)

Utilizator mjmilan11Mujdar Milan mjmilan11 Data 22 iunie 2021 13:27:37
Problema Ridicare la putere in timp logaritmic Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.51 kb
#include <bits/stdc++.h>
#define ll long long
using namespace std;
ifstream fin("algebra2.in");
ofstream fout("algebra2.out");
const ll MOD = 1000000009;
ll n;
ll lgput(ll n,ll p){
    ll rasp=1;
    while(p!=0){
        if(p%2==1){
            rasp=(1LL*rasp*n)%MOD;
            p--;
        }
        n=(1LL*n*n)%MOD;
        p/=2;
    }
    return rasp;
}
int main()
{
    fin >> n;
    if(n%2==1) fout << lgput(lgput(n,n),(n+1)/2);
    else       fout << lgput(lgput(n,n+1),n/2);
    return 0;
}