54. A deck of playing cards has 52 cards. By convention, $A, J, Q, K$ are valued as 1 point, 11 points, 12 points, 13 points respectively. If you draw several cards at random, disregarding suits, to ensure that there are three cards with the same point value, you need to draw at least $\qquad$ cards; to ensure that there are two cards whose point values add up to 15, you need to draw at least $\qquad$ cards.
Reference answer: 27,29