Determine whether the given year is a leap year. (A leap year is divisible by 4 but not by 100, unless it is also divisible by 400.)
A single number is entered – the year (a positive integer not exceeding 30,000).
Output "YES" if the year is a leap year, otherwise output "NO".
[{'input': '2007', 'output': 'NO'}, {'input': '2000', 'output': 'YES'}]