entry = input()
negNums = [] # negtive numbers list
posNums = [] # positive numbers list, zero also will be added into this list

for num in entry.split(', '):
    if int(num) < 0:
        _____________________
    else:
        _____________________


result = []

# get first number from negtive numbers list
# get second and third number from positive numbers list
for firstNumber in negNums: # this is first number
    for secondIndex in range(________): # this is the index of second number
        for thirdIndex in range(________, ________): # this is the index of the third number
            if firstNumber + ________[________] + ________[________] == 0:
                result.append([________, ________, ________])

# get first number from positive numbers list
# get second and third number from negtive numbers list
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________

print(result)