# include<iostream> using namespace std; int main(){ int a1=10000,a2=10000,n; cin>>n; for(int i=3;i<=n;i++){ if(i%2==0){ // cout<<a2<<" "; a2=a2-2; } else{ // cout<<a1<<" "; a1=a1-1; } } if(n%2==0) cout<<a2<<endl; else cout<<a1<<endl; return 0; }