import sys

# sys.setrecursionlimit(200005)
# sys.set_int_max_str_digits(200005)
int1 = lambda x: int(x)-1
pDB = lambda *x: print(*x, end="\n", file=sys.stderr)
p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr)
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def SI(): return sys.stdin.readline().rstrip()

dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
inf = (1 << 63)-1
# md = 10**9+7
md = 998244353

def outer(s,t,p,q,x,y):
    a=p-s
    b=q-t
    c=x-s
    d=y-t
    return a*d-b*c

n=II()
xy=LLI(n)

ans=0
for i,(s,t) in enumerate(xy):
    for p,q in xy[:i]:
        mn,mx=inf,-inf
        for x,y in xy:
            cur=outer(s,t,p,q,x,y)
            if cur<mn:mn=cur
            if cur>mx:mx=cur
        if mx-mn>ans:ans=mx-mn

print(ans)