Compilare: main.cpp: In function 'int bfsDetMinPath(std::vector<std::vector<int> >&, std::vector<std::vector<bool> >&)': main.cpp:48:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for (int i = 1; i < islands.size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp:49:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for (int j = 1; j < islands[i].size(); j++) { | ~~^~~~~~~~~~~~~~~~~~~