Card games. Missions: No. 1

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纸牌游戏。任务：编号为1-52张牌，正面向上，从第2张开始，以2为基数，是2的倍数的牌翻一次，直到最后一张牌；然后，从第3张开始，以3为基数，是3的倍数的牌翻一次，直到最后一张牌；直到以52为基数的翻过，输出：这时输出正面向上的牌有哪些？-Card games. Missions: No. 1-52 cards, face up, to start from the first two to 2 as the base, is a multiple of 2 cards over once, until the last card Then, from the first three to start, to 3 for base, is a multiple of 3 cards over once, until the last card up to 52 as the base of the turn, the output: when the output of the sign face up what?