program visokosniigod;
var x:integer;
begin
writeln('Introdu anu');
read(x);
if((x mod 4=0) or(x mod 400=0)and(x mod 100 <>0)) then writeln('YES');
writeln('NO');
end.

x =int(input())
if x % 4 == 0 or x % 400 == 0 and x % 100 == 0 
  print('YES')
   else
    print (NP')

x =int(input())
if (x % 4 == 0 or (x % 400 == 0 and x % 100 == 0 )):
    print('YES')
else:
    print (NP')

In [1]: True or False and True
Out[1]: True

import calendar
print calendar.isleap(2013)

x % 400 == 0 or x % 4 == 0 and x % 100 != 0