Compilare: main.cpp: In member function 'int Graph::dijkstra(int, int, int, int)': main.cpp:188:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 188 | for(int i = 0 ; i < this->adjacency[current].size() ; i++){ | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<std::pair<int, long long int> > Graph::dijkstraPathAndCost(int)': main.cpp:231:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 231 | for(int i = 0 ; i < this->adjacency[current].size() ; i++){ | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'std::vector<int> Graph::zeroOneBFS(int)': main.cpp:260:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 260 | for(int i = 0 ; i < this->adjacency[current].size(); i++){ | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Solution::rusuoaica()': main.cpp:428:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 428 | for(int i = 0 ; i < newEdgeList.size() ; i++){ | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'int Solution::findCheapestPrice(int, std::vector<std::vector<int> >&, int, int, int)': main.cpp:457:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 457 | for(int i = 0; i < flights.size() ; i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In member function 'int Solution::dragoni1(std::ifstream&, int, int*)': main.cpp:476:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 476 | for(int i = 1 ; i < costs.size() ; i++){ | ~~^~~~~~~~~~~~~~ main.cpp: In member function 'int Solution::dragoni2(std::ifstream&, int, int*)': main.cpp:519:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 519 | for(int i = 0 ; i < graf[currentNode].size() ; i++){ | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'int Solution::jzzhuAndCities()': main.cpp:741:1: warning: no return statement in function returning non-void [-Wreturn-type] 741 | } | ^ main.cpp: In member function 'int Solution::dragoni2(std::ifstream&, int, int*)': main.cpp:536:1: warning: control reaches end of non-void function [-Wreturn-type] 536 | } | ^ main.cpp: In member function 'int Solution::apm2MaximumCost(Graph&, int, int, int)': main.cpp:616:21: warning: 'weight' may be used uninitialized [-Wmaybe-uninitialized] 616 | return weight - 1; | ^ main.cpp:596:9: note: 'weight' was declared here 596 | int weight; | ^~~~~~