Compilare: main.cpp: In function 'bool match(int)': main.cpp:21:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(i=0; i<G[node].size(); ++i) | ~^~~~~~~~~~~~~~~ main.cpp:32:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(i=0; i<G[node].size(); ++i) | ~^~~~~~~~~~~~~~~