s=input().split() a=s[0] b=s[1] m=s[2] n=s[3] m=int(m) n=int(n) a=int(a) b=int(b) if a-b<0: x=(a-b)*-1 print(x) else: print(x) if m-n<0: y=(m-n)*-1 print(y) else: print(y)