Compilare: main.cpp: In function 'void dfs(int)': main.cpp:14:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for (x=0;x<v1[nod].size();x++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'void dfs1(int)': main.cpp:28:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for (x=0;x<v2[nod].size();x++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:76:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | for(j=0;j<comp[i].size();j++) | ~^~~~~~~~~~~~~~~