'''
Given a ticket string consisting of six digits, return YES if its lucky and NO in the opposite case. A ticket is considered lucky if the sum of the first 
three digits is equal to the sum of the last three digits, even when there are leading zeroes.

Example 1
Input:
213132
Output:
YES
Example 2
Input:
973894
Output:
NO
'''
class Solution(object):
    def solve(self,ticket:str)->str:
        first_half = ticket[:3]
        second_half = ticket[3:]
        if sum(int(digit) for digit in first_half) == sum(int(digit) for digit in second_half):
            return "YES"
        return "NO"
    
# Example usage:
if __name__ == "__main__":  
    solution = Solution()
    print(solution.solve("213132"))  # Output: YES
    print(solution.solve("973894"))  # Output: NO
    print(solution.solve("123321"))  # Output: YES
    print(solution.solve("000000"))  # Output: YES
    print(solution.solve("123456"))  # Output: NO