Compilare: main.cpp:1: warning: ignoring '#pragma region Header' [-Wunknown-pragmas] 1 | #pragma region Header | main.cpp:28: warning: ignoring '#pragma endregion ' [-Wunknown-pragmas] 28 | #pragma endregion | main.cpp: In function 'int main()': main.cpp:106:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 106 | else if (f1 == a.size()-1) // y > ar | ~~~^~~~~~~~~~~~~ main.cpp:128:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 128 | else if (f == a.size()-1) // ar <= f | ~~^~~~~~~~~~~~~ main.cpp:174:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 174 | for(int i=0;i<a.size();i+=2){ | ~^~~~~~~~~