n = int(input())

xy = []

for i in range(n):
  x,y = map(int, input().split())
  xy.append((x,y))
  
  
def gaiseki(x1,y1, x2, y2, x3,y3):
  v1x = x3-x1
  v2x = x3-x2
  v1y = y3-y1
  v2y = y3-y2
  
  return v1x*v2y - v1y*v2x

M = 10**18
ans = 0
for i in range(n):
  x1,y1 = xy[i]
  for j in range(i+1, n):
    x2,y2 = xy[j]
    
    v_max = -M
    v_min = M
    
    for k in range(n):
      if(i==k or j==k):
        continue
      x3,y3 = xy[k]
      now = gaiseki(x1,y1, x2, y2, x3,y3)
      v_max = max(v_max, now)
      v_min = min(v_min, now)
    
    if(v_min>0 and v_max<0):
      continue
    ans = max(ans, v_max-v_min)

print(ans)