Compilare: main.cpp: In function 'int main()': main.cpp:41:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | while ( j < edge[i].size() && cul[edge[i][j]] != c ) | ~~^~~~~~~~~~~~~~~~ main.cpp:43:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | if ( cul[i] == -1 && j == edge[i].size() ) | ~~^~~~~~~~~~~~~~~~~