from decimal import Decimal

w, h, x, y = map(int, input().split())

print(Decimal(w*h/2), 1 if w == 2*x and h == 2*y else 0) from decimal import Decimal w, h, x, y = map(int, input().split()) w map(int, input().split()) map int input().split() ().split () input split h x y print(Decimal(w*h/2), 1 if w == 2*x and h == 2*y else 0) print Decimal(w*h/2) Decimal w*h/2 w*h w h 2 1 if w == 2*x and h == 2*y else 0 w == 2*x and h == 2*y w == 2*x w 2*x 2 x h == 2*y h 2*y 2 y 1 0 w, h, x, y = map(int, input().split()) map(int, input().split()) w y = map(int, input().split()) map(int, input().split()) y h, x, y = map(int, input().split()) map(int, input().split()) h x, y = map(int, input().split()) map(int, input().split()) x
from decimal import Decimal

w, h, x, y = map(int, input().split())

print(Decimal(w*h/2), 1 if w == 2*x and h == 2*y else 0)