原有N套扑克牌，因天长日久均已张数不全。现把它们合在一起，看是否能凑成M（M<N）套完整的扑克牌（不用考虑大小王）。-The original N sets of playing cards, because the number of sheets have been天长日久incomplete. Now put them together to see if can make up M (M <N) complete sets of playing cards (without