figura

h = int(input())
x = int(input())
y = int(input())
a = "inside"
b = "border"
c = "outside"
if ((0 <= x <= (3*h) and y == 0) or (0 <= x <= h and y == h) or (h <= x <= (2*h) and y == (h*4)) or ((h*2)<= x <= (h*3)  and y == h) or
    (0 <= y <= h and x == 0) or (h <= y <= (h*4) and x == h) or (h <= y <= (h*4) and x == (h*2)) or (0 <= y <= h and x == (h*3)) ):
    print (b)
elif (0< x <(3*h) and 0<  y < h) or (h < x < (h*2) and h < y <(h*4)):
    print(a)
else:
    print(c)