Compilare: main.cpp: In function 'int main()': main.cpp:183:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 183 | for (int i = 0; i < reversed_path_for_topo.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:265:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 265 | for (int i = 0; i < vec_of_vec_char_paths.size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:267:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 267 | for (int j = 0; j < vec_of_vec_holding_the_paths[i].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:290:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 290 | for (int i = 0; i < vec_of_vec_char_paths[k - 1].size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~