Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:16:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (int i=0;i<v[x].size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:80:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | for (int j=1;j<sal[i].size();j++) | ~^~~~~~~~~~~~~~ main.cpp:82:17: warning: unused variable 'nod' [-Wunused-variable] 82 | int nod = sal[i][j]; | ^~~