I,R=input,range
N=int(I())
X=[0]*N
Y=[0]*N
M=R(N)
for i in M:X[i],Y[i]=map(int,I().split())
S=[[[(X[j]-X[i])*(Y[k]-Y[i])-(Y[j]-Y[i])*(X[k]-X[i])for k in M]for j in M]for i in M]
F=[[-10**8,-10**8]for v in R(N*N)]
a=0
for i in R(N):
	for j in R(i+1,N):
		v=i*N+j
		for k in R(N):
			s=S[i][j][k]
			if k!=i and k!=j:
				for c in R(2):F[v][c]=max(F[v][c],[s,-s][c])
		a=max(a,abs(sum(F[v])))
print(a)