#include <iostream> #include <string> #include <cstring> #include <algorithm> #include <unordered_map> using namespace std; const int N = 100010; unordered_map<char, int> tab={{'0',0},{'1',1},{'2',2},{'3',3},{'4',4},{'5',5},{'6',6},{'7',7},{'8',8},{'9',9},{'a',10}...