## https://yukicoder.me/problems/no/2331


def main():
    N = int(input())
    xy = []
    for _ in range(N):
        x, y = map(int, input().split())
        xy.append((x , y))
    
    answer = 0
    for i in range(N):
        for j in range(i + 1, N):
            x0,y0 = xy[i]
            x1,y1 = xy[j]

            v0_x = x1 - x0
            v0_y = y1 - y0

            p_max = -1
            p_min = -1
            for k in range(N):
                w0_x = xy[k][0] - x0
                w0_y = xy[k][1] - y0

                d = (v0_x * w0_y - v0_y * w0_x)
                if d > 0:
                    p_max = max(p_max, d)
                elif d < 0:
                    p_min = max(p_min, abs(d))

            if p_max > 0 and p_min > 0:
                ans = p_min + p_max
                answer = max(ans, answer)
    print(answer)







if __name__ == "__main__":
    main()