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；然后…从第4张开始，以4为基数，是4的倍数的牌翻一次， 直到最后一张牌；...再依次5的倍数的牌翻一次，6的，7的 直到 以52为基数的 翻过，输出：这时正面向上的牌有哪些？

-Card Games task: number is 1-52 cards, face up, starting from the first two to two as the base, is a multiple of 2 cards turning once, until the last card　and then started from the first three in order to 3 as a base, is a multiple of three cards turning once, until the last card　then ... starting from the first 4 to 4 as the base, is a multiple of 4 cards turning once, until the last card　... and then in multiples of 5 cards in turn turning once, 6, and 7 to 52 as the base until it crossed, the output: when the cards face up What?