第一题 题一视频:https://www.bilibili.com/video/BV1Qu411D7UH?spm_id_from=333.999.0.0 #include <bits/stdc++.h> using namespace std; int xs[] = {0, 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2}; string rs = "10X98765432"; char id[20]; vector<int> idx; int ans; int check() ...