from functools import cmp_to_key

n=int(input())
a=[]
for i in range(n):
    x,y=map(int, input().split())
    a.append((x,y))
def pos(v):
    if v[1]<0:
        return -1
    if v[1]==0 and 0<=v[0]:
        return 0
    return 1

def comp(s,t):
    if(pos(s)!=pos(t)):
        return -1 if pos(s)<pos(t) else 1
    return -1 if 0<s[0]*t[1]-s[1]*t[0] else 1
ans=0
for x1,y1 in a:
    q=[]
    for x2,y2 in a:
        if x1==x2 and y1==y2:
            continue
        q.append((x2-x1,y2-y1))
    
    q.sort(key=cmp_to_key(comp))
    l=0
    r=0
    while(l+len(q)!=0 and q[0][0]*q[l%len(q)][1]-q[0][1]*q[l%len(q)][0]==0):
        l=l-1
    for j in range(len(q)):
        if(j!=0 and q[j][0]*q[j-1][1]-q[j][1]*q[j-1][0]!=0):
            l=j-1
        while(r!=j+len(q) and q[j][0]*q[r%len(q)][1]-q[j][1]*q[r%len(q)][0]>=0):
           r=r+1
        ans=(ans+(r-l)*(x1*(y1+q[j][1])-y1*(x1+q[j][0]))) %1000000007 
print(ans)