#include <iostream>
using namespace std;

int main(){
  int x;
  cin >> x;
  cout << max(0,x) << endl;
}
#include<bits/stdc++.h>
using namespace std;
int main(){
	int x;
	cin>>x;
	if(x>=0){
		cout<<x<<endl;
	}else {
		cout<<"0"<<endl;
	}
	return 0;
}