#include<iostream>
using namespace std;
class a{
    private:
    int n;

    public:
    void setn(int n){
        this->n=n;
        
    }
    int hetn(){
        return n;
    }
};
int main(){
    int n;
    cin>>n;
    if(n<1 || n>1000){
        cout<<"Innvalid input";
        return 0;
        
    }
    a obj;
    obj.setn(n);
    cout<<obj.getN();
    return 0;
}