Envío 1903

Código

#!/usr/bin/python3


def looking(size_buildings, index):
    block = -1
    output = []
    for i in reversed(range(len(size_buildings))):
        if size_buildings[i] >= block:
            output.append(-1)
            block = size_buildings[i]
        else:
            output.append(block)

    print("Case #{}:".format(index), end="")
    for i in reversed(range(len(output))):
        print(end=" ")
        print(output[i], end="")
    print()


cases = int(input())
size_buildings = []
buildings = 0

for i in range(cases):
    buildings = int(input())
    size_buildings = input().split()
    size_buildings = list(map(int, size_buildings))
    looking(size_buildings, i + 1)