Compilare: main.cpp: In function 'void dfs_solve(int, int)': main.cpp:41:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (int i = 0; i < v[nod].size(); i ++) { | ~~^~~~~~~~~~~~~~~ main.cpp:53:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for (int i = 0; i < v[nod].size(); i ++) { | ~~^~~~~~~~~~~~~~~ main.cpp:61:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for (int i = 0; i < v[nod].size(); i ++) { | ~~^~~~~~~~~~~~~~~ main.cpp:65:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for (int j = 0; j < Pers[Bus].size(); j ++) { | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:94:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 94 | for (int i = 0; i < edges.size(); i ++){ | ~~^~~~~~~~~~~~~~