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S (либо)
S = 0 ++ 0 ++ 0 = 0
S = 0 ++ 0 ++ 1 = 1
S = 0 ++ 1 ++ 0 = 1
S = 0 ++ 1 ++ 1 = 0
S = 1 ++ 0 ++ 0 = 1
S = 1 ++ 0 ++ 1 = 0
S = 1 ++ 1 ++ 0 = 0
S = 1 ++ 1 ++ 1 = 1

Pout = (0 · 0) + (0 · 0) + (0 · 0) = 0 + 0 + 0 = 0
Pout = (0 · 0) + (0 · 1) + (0 · 1) = 0 + 0 + 0 = 0
Pout = (0 · 1) + (0 · 0) + (1 · 0) = 0 + 0 + 0 = 0
Pout = (0 · 1) + (0 · 1) + (1 · 1) = 0 + 0 + 1 = 1
Pout = (1 · 0) + (1 · 0) + (0 · 0) = 0 + 0 + 0 = 0
Pout = (1 · 0) + (1 · 1) + (0 · 1) = 0 + 1 + 0 = 1
Pout = (1 · 1) + (1 · 0) + (1 · 0) = 1 + 0 + 0 = 1
Pout = (1 · 1) + (1 · 1) + (1 · 1) = 1 + 1 + 1 = 1