Compilare: main.cpp: In function 'void solve()': main.cpp:63:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<short unsigned int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | for (int j = 1; j < cod.second.size(); j++){ | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:38:26: warning: unused variable 'max_code' [-Wunused-variable] 38 | unsigned short n, c, max_code = 0; | ^~~~~~~~