Compilare: main.cpp: In member function 'void Task::dfs(int)': main.cpp:34:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for ( int i = 0 ; i < adj_trans[src].size() ; i++ ) { | ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Task::afis()': main.cpp:43:24: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wformat=] 43 | fprintf(out, "%d\n", solution.size()); | ~^ ~~~~~~~~~~~~~~~ | | | | int std::vector<int>::size_type {aka long unsigned int} | %ld main.cpp:44:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for ( int i = 0 ; i < solution.size() ; i++ ) { | ~~^~~~~~~~~~~~~~~~~