Compilare: main.cpp:60:13: warning: multi-character character constant [-Wmultichar] 60 | out << '-1'; | ^~~~ main.cpp: In function 'int main()': main.cpp:14:20: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 14 | for (int i = 0; i < p; i++) | ~~^~~ main.cpp:52:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<unsigned int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for (int i = 1; i < a.size(); i++) | ~~^~~~~~~~~~