0.4 Balanced brackets

n = int(input())
opening_brackets_count = 0
closing_brackets_count = 0
is_balanced = False

for i in range(0, n):
    text = input()
    if text == "(":
        opening_brackets_count += 1
    elif text == ")":
        closing_brackets_count += 1
if closing_brackets_count == opening_brackets_count:
    is_balanced = True
    print(f"BALANCED")
else:
    print(f"UNBALANCED")