Compilare: main.cpp: In member function 'int Graph::getGraphDiameter()': main.cpp:108:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 108 | for(int i = 1; i<= cost1.size(); i++) { // the maximum distance to a node | ~^~~~~~~~~~~~~~~ main.cpp:117:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 117 | for(int i = 1; i<= cost2.size(); i++) { | ~^~~~~~~~~~~~~~~ main.cpp: In member function 'bool Graph::havelHakim(std::vector<int>)': main.cpp:188:18: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 188 | if(grades[0] > grades.size()-1) main.cpp: In function 'int main()': main.cpp:413:18: warning: unused variable 'nrEdges' [-Wunused-variable] 413 | int nrNodes, nrEdges; | ^~~~~~~ main.cpp:418:15: warning: unused variable 'z' [-Wunused-variable] 418 | int x ,y ,z; | ^ main.cpp: In member function 'int Graph::getGraphDiameter()': main.cpp:124:22: warning: 'node' may be used uninitialized in this function [-Wmaybe-uninitialized] 124 | return cost2[node]; | ^