def digital_root(num_str):
    """Вычисляет цифровой корень числа"""
    total = sum(int(digit) for digit in num_str)
    
    while total >= 10:
        total = sum(int(digit) for digit in str(total))
    
    return total


def is_lucky_ticket(ticket):
    
    n = len(ticket)
    
    for i in range(1, n):
        left_part = ticket[:i]
        right_part = ticket[i:]
        
        left_root = digital_root(left_part)
        right_root = digital_root(right_part)
        
        if left_root == right_root:
            return True
    
    return False

with open('INPUT.TXT', 'r') as f:
    ticket_number = f.read().strip()


if is_lucky_ticket(ticket_number):
    result = "YES"
else:
    result = "NO"

with open('OUTPUT.TXT', 'w') as f:
    f.write(result)