562 B | 562 chars
import sys
from math import sqrt, pi, sin, factorial
inp = lambda : sys.stdin.readline()[:-1]
mii = lambda x = " " : [*map(int,inp().split(x))]
mfi = lambda x = " " : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
def f(x, y):
if x == 0 or y == 0:
return "divisa"
if x > 0:
return ("NE" if y > 0 else "SE")
else:
return ("NO" if y > 0 else "SO")
while 1:
n = ii()
if n == 0:
break
k = mii()
l = [mii() for i in range(n)]
for i in l:
print(f(i[0] - k[0], i[1] - k[1]))