摘要："ref" 主要是要理解“撑到“最长这个概念 （为啥我的代码这么长QAQ cpp include include using namespace std; typedef unsigned long long ull; int n, pa[200005], pb[200005], ans; ull 阅读全文

摘要：```cpp include include include include using namespace std; typedef unsigned long long ull; struct Node{ ull val1, val2; }node[10005]; char a[1505]; i 阅读全文