Compilare: main.cpp: In function 'void DFS(int)': main.cpp:17:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for (int i = 0; i < v[start].size(); i++) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:38:9: warning: left operand of comma operator has no effect [-Wunused-value] 38 | V1, V2; | ^~ main.cpp:38:15: warning: right operand of comma operator has no effect [-Wunused-value] 38 | V1, V2; | ^ main.cpp:43:23: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 43 | if(pereche.size() == X - 1) | ~~~~~~~~~~~~~~~^~~~~~~~