#include<bits/stdc++.h>
using namespace std;
#define SZ(v) ((int)(v).size())
#define rep(i,n) for(int i=0;i<(n);i++)
#define all(v) (v).begin(),(v).end()
template<typename T>inline bool chkmin(T &a,const T &b){return a>b?a=b,1:0;}
template<typename T>inline bool chkmax(T &a,const T &b){return a<b?a=b,1:0;}
typedef long long ll;
typedef unsigned uint;
const int INF=0x3f3f3f3f;
const double EPS=1e-10;
typedef pair<int,int> pii;
int inline in(){int x=0,c;for(;(uint)((c=getchar())-'0')>=10;)
{if(c=='-')return -in();if(!~c)throw ~0;}do{x=(x<<3)+(x<<1)+(c-'0');}
while((uint)((c=getchar())-'0')<10);return x;}

int x;
int main(){
	scanf("%d",&x);
	printf("%d\n",x<0?0:x);
	return 0;
}
#include <iostream>

int main() {
	int x;
  	std::cin >> x;
  	if(x >= 0) std::cout << x;
  	else std::cout << 0;
}