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First solution in Clear category for Digit Stack by fed.kz
def digit_stack(commands):
stack = []
total = 0
for com in commands:
if 'PUSH' in com:
stack.append(int(com[5:]))
elif com == 'POP' and stack:
total += stack.pop()
elif stack: total += stack[-1]
return total
Oct. 19, 2018
