Compilare: main.cpp: In member function 'int Graph::hamilton()': main.cpp:43:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for (int k = 0; k < adj_list_costs[j].size(); k++) // | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:53:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for (int i = 0; i < adj_list_costs[0].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:53:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 53 | for (int i = 0; i < adj_list_costs[0].size(); ++i) | ^~~ main.cpp:56:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 56 | return final_cost; | ^~~~~~