Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:22:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(int i = 0; i < v[nod].size(); i++){ | ~~^~~~~~~~~~~~~~~ main.cpp:29:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i = 0; i < vt[nod].size(); i++){ | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:71:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for(int i = 0; i < ctc.size(); i++){ | ~~^~~~~~~~~~~~ main.cpp:81:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for(int i = 0; i < ctc.size(); i++){ | ~~^~~~~~~~~~~~ main.cpp:83:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for(int j = 0; j < ctc[i].size(); j++) out << ctc[i][j] << " "; | ~~^~~~~~~~~~~~~~~