Compilare: main.cpp: In function 'void dfs(int)': main.cpp:18:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | if (nod == c.size()-1) { | ~~~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:41:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int i = 0; i<c.size()-1; i++) { | ~^~~~~~~~~~~ main.cpp:59:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for (int i = 0; i<pozA.size()-1; i++) { | ~^~~~~~~~~~~~~~