Compilare: main.cpp: In function 'void dfs1(int)': main.cpp:15:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for(i=0;i<v1[nod].size();i++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:27:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for(i=0;i<v2[nod].size();i++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:60:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(j=0;j<sol[i].size();j++) | ~^~~~~~~~~~~~~~