Compilare: main.cpp: In function 'void solve()': main.cpp:12:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | for(int i = 1; i < pnt_arr.size(); i++){ | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'bool verify()': main.cpp:29:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i = 0; i < pnt_arr.size() - 1; i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void combine()': main.cpp:49:31: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 49 | if(pnt_arr.size() == n){ | ~~~~~~~~~~~~~~~^~~~ main.cpp:38:10: warning: unused variable 'end_task' [-Wunused-variable] 38 | bool end_task = false; | ^~~~~~~~