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x1,y1 = map(float,input().split())
x2,y2 = map(float,input().split())
a = complex(round(x1+x2,1),round(y1+y2,1))
b = complex(round(x1-x2,1),round(y1-y2,1))
print(a)
print(b)
# 这个代码暂时有 bug，整数的时候不会补 0，但是暂时够用了