Compilare: main.cpp: In member function 'void Solution::Ghizi()': main.cpp:204:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 204 | for(int i = 0; i < vol.size(); ++i){ | ~~^~~~~~~~~~~~ main.cpp: In member function 'void Solution::Paznici()': main.cpp:274:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 274 | for(int j = 0; j < a.size(); ++j){ | ~~^~~~~~~~~~ main.cpp: In member function 'void Solution::NoPrimeSum()': main.cpp:329:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 329 | for(int i = 0; i < leftNodes.size(); ++i){ | ~~^~~~~~~~~~~~~~~~~~ main.cpp:330:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 330 | for(int j = 0; j < rightNodes.size(); ++j){ | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:337:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 337 | for(int i = 1; i <= leftNodes.size(); ++i){ | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:340:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 340 | for(int i = 1; i <= rightNodes.size(); ++i){ | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:346:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 346 | for(int i = 0; i < leftNodes.size(); ++i){ | ~~^~~~~~~~~~~~~~~~~~ main.cpp:351:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 351 | for(int i = 0; i < rightNodes.size(); ++i){ | ~~^~~~~~~~~~~~~~~~~~~