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A - Plus Minus Editorial by evima
By rearranging \(A = X + Y, B = X - Y\), we can find that \(X = (A + B) / 2, Y = (A - B) / 2\).
Sample Implementation:
A, B = map(int, input().split())
print((A + B) // 2, (A - B) // 2)
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