Compilare: main.cpp: In member function 'int Graf::match(int)': main.cpp:26:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for (int i=0; i<L[nod].size(); i++) { | ~^~~~~~~~~~~~~~ main.cpp:36:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for (int i=0; i<L[nod].size(); i++) { | ~^~~~~~~~~~~~~~