FUCK

def CheckTriangleRule(arr):
    a = sorted(arr)
    return a[2] < a[0] + a[1]
def Task4():
    sides = sorted(list(map(int, input().split())))
    diagonal = sides[2] # Because it's middle element
    if CheckTriangleRule(sides[0:3]) and CheckTriangleRule(sides[2:5]):
        return [diagonal, *sides[0:2], *sides[3:5]]
    else:
        return 0
a = Task4()
if type(a) is int:
    print(a)
else:
    print(f"{a[0]}\n{a[1]} {a[2]}\n{a[3]} {a[4]}\n")