825 B | 825 chars
import sys
from math import sqrt, pi, sin, factorial, ceil, floor
BLANK = " "
inp = input
# inp = lambda : sys.stdin.readline()[:-1].strip()
mii = lambda x = BLANK : [*map(int,inp().split(x))]
mfi = lambda x = BLANK : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
p = print
def f(l):
a, b = l[2] - l[0], l[3] - l[1]
return [min(a, b), max(a, b)]
def g(a, b):
if a[0] <= b[0] and a[1] <= b[1]:
return False
if b[0] <= a[0] and b[1] <= a[1]:
return False
return True
def solve():
n = ii()
l = [f(mii()) for _ in range(n)]
cnt = 0
for i in range(n):
for j in range(i + 1, n):
A = l[i]
B = l[j]
if g(A, B):
cnt += 1
p(cnt)
if __name__ == "__main__":
tc = 1
for t in range(1, tc+1):
ret = solve()