Python-Advanced-Exercises , Lists as Stacks and Queues - Lab

# Python-Advanced-Exercises , Lists as Stacks and Queues - Lab
# https://judge.softuni.org/Contests/Practice/Index/1830#0

# 01. Reverse Strings
# 02. Matching Parentheses
# 03. Supermarket
# 04. Water Dispenser
# 05. Hot Potato
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# 01. Reverse Strings

data = list(input())
while data:
    print(data.pop(), end='')


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# 02. Matching Parentheses

expression = input()
par_stack = []

for index in range(len(expression)):
    if expression[index] == '(':
        par_stack.append(index)

    elif expression[index] == ')':
        start_index = par_stack.pop()
        print(expression[start_index:index+1])


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# 03. Supermarket


from collections import deque
name = input()
line = deque()

while not name == 'End':
    if name == 'Paid':
        while line:
            print(line.popleft())
    else:
        line.append(name)
    name = input()

print(f'{len(line)} people remaining.')


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# 04. Water Dispenser


from collections import deque
liters = int(input())
name = input()
line = deque()

while not name == 'Start':
    line.append(name)
    name = input()

command = input()
while not command == 'End':
    if command.isdigit():
        required_liters = int(command)
        name = line.popleft()
        if liters >= required_liters:
            liters -= required_liters
            print(f'{name} got water')
        else:
            print(f'{name} must wait')
    else:
        command = command.split()
        litters_to_fill = int(command[1])
        liters += litters_to_fill

    command = input()

print(f'{liters} liters left')


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# 05. Hot Potato


from collections import deque

kids = deque(input().split())
n = int(input())
while len(kids) > 1:
    kids.rotate(-n)
    print(f"Removed {kids.pop()}")

print(f'Last is {kids.pop()}')

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