Giai gium voi a, C++

#pragma GCC optimize("03")
#include<bits/stdc++.h>
#define ll long long
using namespace std;
int main() {
   ll a;
   cin >>a ;
   if(a%2==0)cout<<0;
   else cout<<1;
}

\begin{array}{c} \color{#db1616}{\texttt{#Khoadang09}} \end{array}

#include <bits/stdc++.h>
#define ll long long 
#define nhanh  ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define odd_even(x) ((x%2==0)?(0):(1))
using namespace std;
int main(){
    nhanh;
    ll n; cin >> n;
    cout << odd_even(n);
}