import sys
input = sys.stdin.readline

N = int(input())
X, Y = [0] * N, [0] * N
for i in range(N):
    X[i], Y[i] = map(int, input().split())

def f(x1, x2, y1, y2, x, y):
    return (x2 - x1) * (y - y1) - (y2 - y1) * (x - x1)

ans = 0
for i in range(N):
    for j in range(i + 1, N):
        ans1, ans2 = 0, 0
        for k in range(N):
            v = f(X[i], X[j], Y[i], Y[j], X[k], Y[k])
            if v == 0:
                continue
            if v > 0:
                ans1 = max(ans1, v)
            else:
                ans2 = max(ans2, -v)
        ans = max(ans, ans1 + ans2)

print(ans)