1990B - Array Craft - CodeForces Solution

for i in range(int(input())):
  n,x,y = [int(i) for i in input().split()]
  listical = []
  if y%2 == 0:
    for i in range(y//2 - 1):
      listical.append(-1)
      listical.append(1)
    listical.append(-1)
  else:
    for i in range(y//2):
      listical.append(1)
      listical.append(-1)
  for i in range(x+1-y):
    listical.append(1)
  for i in range((n-x)//2):
    listical.append(-1)
    listical.append(1)
  if n > len(listical):
    listical.append(-1)

  print(' '.join(str(i) for i in listical))