A and B play the following game. A starts first, and the two take turns removing 14 numbers from the natural numbers of 1-100 each time. After 7 operations, there are still 2 numbers left. At this time, the remaining two The difference between the numbers is A's score. If A adopts the correct strategy, how many points can he guarantee at least?
甲和乙两人进行如下游戏，甲先开始，两人轮流从1-100的自然数中每次任意勾去14个数，经过7次操作之后，还剩下2个数，这时余下的两个数之差即为甲的得分，如果甲采取正确的策略，可以保证自己至少得几分？
<result>57</result>