Compilare: main.cpp: In function 'void DFS(int)': main.cpp:33:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(int i=0; i<tree[nod].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int poate_cobori(int)': main.cpp:43:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(int i=0; i<tree[v[poz].nod].size(); i++) | ~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:71:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for(int j=0; j<nivel[i].size(); j++) | ~^~~~~~~~~~~~~~~~ main.cpp:81:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for(int i=0; i<tree[nod].size(); i++) | ~^~~~~~~~~~~~~~~~~