/in/foo.cc:1:1: error: 'include' does not name a type
 include<bits/stdc++.h>
 ^~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:6:2: error: 'cin' was not declared in this scope
  cin>>x;
  ^~~
/in/foo.cc:7:11: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if(x%4==0&&x%100!=0||x%400==0)
     ~~~~~~^~~~~~~~~~
/in/foo.cc:8:2: error: 'cout' was not declared in this scope
  cout<<"YES";
  ^~~~
/in/foo.cc:10:2: error: 'cout' was not declared in this scope
  cout<<"NO";
  ^~~~