import collections,sys,math,functools,operator,itertools,bisect,heapq,decimal,string,time,random
#sys.setrecursionlimit(10**9)
#n = int(input())
#alist = list(map(int,input().split()))
#alist = []
a,b = map(int,input().split())
c,d = map(int,input().split())
print(a*c-b*d,a*d+b*c)