#include <string> #include <iostream> #include <map> #include <cmath> using namespace std; int main() { string str; map<char, int> myMap = {{'0', 0}, {'1', 1}, {'2', 2}, {'3', 3}, {'4', 4}, {'5', 5}, {'6', 6}, {'7', 7}, {'8', 8}, {'9', 9}, {'A', 10}, {'B', 11}, {'C', 12...