f=open("vaipsis.txt", encoding="utf-8")
K, L, P=[int(jupp) for jupp in f.readline().strip().split(" ")]
for nr in range(K):
  N, S, E, W =[int(jupp) 
       for jupp in f.readline().strip().split(" ")]
  print((L-E-W)*(P-N-S))