#include <iostream> #include <string> int main() { std::string s1, s2; std::cin >> s1 >> s2; if (s2.find(s1) != std::string::npos) { std::cout << "(" << s1 << ") is substring of (" << s2 << ")" << std::endl; } else if (s1.find(s2) != std::string::npos) { std::cout << "(" << s2 << ") is substring of (" << s1 << ")" << std::endl; } else { std::cout << "No substring" << std::endl; } return 0; }