A Prisoner died in Cell number 13, how to take his body out of the prison through Gate 4. His body must pass through all the cells for all prisoners to see, no prisoner is allowed to see him more than once.
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A patient in cell 13 is sick, he is allowed to go home but he wants to meet all other patients before he leaves, but the doctor said you are allowed to see each patient only once else there is a chance of you getting sick again, how can he do that?