摘要：二分答案+哈希 #include<iostream> #include<cstdio> #define ri register int #define u unsigned long long namespace opt { inline u in() { u x(0),f(1); char s(g 阅读全文

摘要：栈模拟，哈希 #include<iostream> #include<cstdio> #define ri register int #define u unsigned long long namespace opt { inline u in() { u x(0),f(1); char s(ge 阅读全文

摘要：手动哈希 前缀和 比较字符串是否相同 #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> #define ri register int #define u unsigned long long #def 阅读全文