#include <iostream>
#include <sstream>

std::string getInput() {
    std::string inputt{};
    std::cin >> inputt;
    return inputt;
}

int main() {
   std::string first_val{getInput()};
   std::string second_val{getInput()};
   std::string first_char_of_first_value {first_val[0]};
   std::string second_char_of_first_value {second_val[0]};
   std::cout << first_val.length() << " " << second_val.length() << '\n';
   std::cout << first_val+second_val << '\n';
   std::cout << first_val.replace(0,1,second_char_of_first_value) << " " << second_val.replace(0,1,first_char_of_first_value) << '\n';

    return 0;
}