#include <iostream> using namespace std; int main(){ int a; cin>>a; switch(a){ case 1:cout<<"1"<<"NO"; case 2:cout<<"2"<<"YES"; case 3:cout<<"3"<<"NO"; case 4:cout<<"4"<<"YES"; case 5:cout<<"5"<<"NO"; case 6:cout<<"6"<<"YES"; default:cout<<"7"<<"YES"; } }