A robber went 2 rob a bank, he threatened 2 kill d cashier if he didn't open d vault. The cashier told him dat d vault is not opened with keys lyk in d olden days but wit password. U can't kill me since I'm d only one who knws d password nd everyday d password is different. D robber shot d cashier, enter d password, open d vault nd rob all d money.... D question is what z d password??...