两人各有N张牌，轮流出牌，每次一个人把牌叠在上一次出的牌的上

方，如果这时发现当前的牌与前面的牌有重复，那么这之间的牌就都归出牌人了，收回去

的牌不会再被打出。芒果先出牌。请你计算一下第一轮下来芒果和冰沙获得的牌数-They have N cards, turn the cards, the card each time a stack of cards in the last of the top, if the current card and then find the card in front of overlap, so that all the cards in between owned by a licensee, and back to the card will no longer be played. Mango, first-out cards. Please calculate the first round of mango and smoothies down the license number to obtain