t1 = [0, 0, 0, 0]
t2 = [1,2,3]
t3 =


def bn(nums):
    nums.sort()
    rev = nums[::-1]
    print(rev)
    if sum(rev) == 0:
        return '0'
    else:
        out = [str(i) for i in rev]
    return ''.join(out)