// c = ~c
c.write(0);
c.not();
c.read();

// jeśli (b) to c = ~c
qc.write(2, 2|4);
c.not(b);
qc.read(2|4);

// jeśli (a i b) to c = ~c
qc.write(1|2);
qc.cnot(4, 1|2);
qc.read(1|2|4);
