a, b = io.read("*n", "*n")
c, d = io.read("*n", "*n")
n = 1LL * a * c - 1LL * b * d
m = 1LL * a * d + 1LL * b * c
n = tostring(n):gsub("LL", "")
m = tostring(m):gsub("LL", "")
print(n .. " " .. m)