Compilare: main.cpp: In function 'void dfs(int)': main.cpp:14:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int i=0;i<l[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:28:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for(int i=0;i<g[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:71:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for(j=0;j<sol[i].size();j++) | ~^~~~~~~~~~~~~~