Compilare: main.cpp: In function 'void dfs(int)': main.cpp:22:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(i=0; i<v[nod].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:33:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(i=0; i<inv[nod].size(); i++) | ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:72:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(j=0; j<sl[i].v.size(); j++) g<<sl[i].v[j]<<" "; | ~^~~~~~~~~~~~~~~