Compilare: main.cpp: In function 'void solve(const short int&)': main.cpp:85:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<pct>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | if (ans.no_Queens == pnt_arr.size()) { | ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~ main.cpp:87:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<pct>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 87 | } else if (ans.no_Queens < pnt_arr.size()) { | ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~ main.cpp:97:31: warning: comparison of integer expressions of different signedness: 'std::vector<pct>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 97 | if(pnt_arr.size() < nr_lib) { | ~~~~~~~~~~~~~~~^~~~~~~~