div1 250pt: 题意:... 解法:先假设空出来的位置是0,然后模拟一次看看是不是满足,如果不行的话,我们只需要关心最后栈顶的元素取值是不是受空白处的影响,于是还是模拟一下. // BEGIN CUT HERE // END CUT HERE #line 5 "Suminator.cpp" #include<cstdio> #include<cstring> #include<cstdlib> #include<ctime> #i…
首先我们来简单看一下这道题的statement Problem Statement Note that in the following problem statement, all quotes and angle brackets are for clarity A certain vending machine delves out its goods from a rotating cylinder, which can rotate around in both clockw…