Compilare: main.cpp: In function 'int main()': main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for (int i = 2; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp:46:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for (int i = 1; i < b.size(); i++) | ~~^~~~~~~~~~ main.cpp:60:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | if (currIndex == a.size() - 1) // size - 1 beacause we did a = " " + a | ~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:68:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for (int i = 0; i < 1000 && i < solutions.size(); i++) | ~~^~~~~~~~~~~~~~~~~~