摘要：Problem Description #define xhxj (Xin Hang senior sister(学姐)) If you do not know xhxj, then carefully reading the entire description is very important 阅读全文

摘要：Problem Description For a decimal number x with n digits (AnAn-1An-2 ... A2A1), we define its weight as F(x) = An * 2n-1 + An-1 * 2n-2 + ... + A2 * 2 阅读全文

摘要：Problem Description A balanced number is a non-negative integer that can be balanced if a pivot is placed at some digit. More specifically, imagine ea 阅读全文