Compilare: main.cpp: In constructor 'Cup::Cup(short int, short int, short int, std::map<short int, std::vector<short int> >&)': main.cpp:25:25: warning: comparison of integer expressions of different signedness: 'short int' and 'std::map<short int, std::vector<short int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | if (this->level >= stack.size()) | ~~~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'void fill(Cup&, std::map<short int, std::vector<short int> >&, std::map<std::pair<short int, short int>, Cup>&)': main.cpp:55:17: warning: comparison of integer expressions of different signedness: 'short int' and 'std::map<short int, std::vector<short int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | if (c.level >= stack.size()) | ~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:64:9: warning: unused variable 'i' [-Wunused-variable] 64 | int i = 0; | ^ main.cpp: In function 'int main()': main.cpp:137:23: warning: comparison of integer expressions of different signedness: 'short int' and 'std::map<short int, std::vector<short int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 137 | for (k = 1; k <= stack.size(); k++) | ~~^~~~~~~~~~~~~~~ main.cpp:140:33: warning: comparison of integer expressions of different signedness: 'short int' and 'std::vector<short int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 140 | for (short i = 0; i < level.size(); i++) | ~~^~~~~~~~~~~~~~