#include<bits/stdc++.h> using namespace std; int main() { /**char a; cin>>a; if(a == 'Y'){ cout<<'A'; }else { if(a == 'Z'){ cout<<'B'; }else{ cout<<char(a+2) ; } } int a; cin>>a; if(a>=60){ cout<<"YES"; }else { cout<<"NO"; } int a; cin>>a; if(a>30){ cout<<"hot"; }else { cout<<"cold"; } int a; cin >>a; if(a %2 == 1){ cout<<"Yes" ; }else { cout<<"No"; } int a,b; cin>>a>>b; if(a>b){ cout<<a; }else { cout<<b; }**/ int a; cin>>a; if(a>0){ cout<<"YES"; }else { cout<<"NO"; } return 0; }