Compilare: main.cpp: In member function 'int Graph::dfs(int, int)': main.cpp:90:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Graph::muchie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for(int &h = rem[nod] ; h < vecini[nod].size() ; h++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::add(int, int, int)': main.cpp:119:46: warning: narrowing conversion of '(&((Graph*)this)->Graph::vecini.std::vector<std::vector<Graph::muchie> >::operator[](((std::vector<std::vector<Graph::muchie> >::size_type)b)))->std::vector<Graph::muchie>::size()' from 'std::vector<Graph::muchie>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 119 | vecini[a].push_back({b,vecini[b].size(),c,0}); | ~~~~~~~~~~~~~~^~ main.cpp:120:49: warning: narrowing conversion of '((&((Graph*)this)->Graph::vecini.std::vector<std::vector<Graph::muchie> >::operator[](((std::vector<std::vector<Graph::muchie> >::size_type)a)))->std::vector<Graph::muchie>::size() - 1)' from 'std::vector<Graph::muchie>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 120 | vecini[b].push_back({a,vecini[a].size() - 1,0,0}); | ~~~~~~~~~~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:147:15: warning: unused variable 'b' [-Wunused-variable] 147 | int n,m,a,b,c,k; | ^ main.cpp:147:17: warning: unused variable 'c' [-Wunused-variable] 147 | int n,m,a,b,c,k; | ^