Compilare: main.cpp: In function 'void DFS(int)': main.cpp:18:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for(int i=0;i<umap[vaca].size();i++) | ~^~~~~~~~~~~~~~~~~~ main.cpp:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(int j=0;j<v[umap[vaca][i]].size();j++) | ~^~~~~~~~~~~~~~~~~~~~~~~~