Compilare: main.cpp: In member function 'void Graph::bfs(int)': main.cpp:142:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 142 | for(int i = 1; i < distances.size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void Graph::stronglyConnectedComponents()': main.cpp:228:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 228 | for(int i = 0 ; i < sccs.size(); i++) | ~~^~~~~~~~~~~~~ main.cpp:231:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 231 | for(int j = 0; j < sz; j++) | ^~~ main.cpp:233:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 233 | fout<<"\n"; | ^~~~ main.cpp: In member function 'void Graph::HH()': main.cpp:299:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 299 | if(v > seq.size()) | ~~^~~~~~~~~~~~ main.cpp: In member function 'void Graph::MST()': main.cpp:363:23: warning: passing NULL to non-pointer argument 1 of 'void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = int; _Alloc = std::allocator<int>; std::vector<_Tp, _Alloc>::value_type = int]' [-Wconversion-null] 363 | mst.push_back(NULL); | ^~~~ In file included from /usr/include/c++/10/vector:67, from /usr/include/c++/10/queue:61, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:86, from main.cpp:1: /usr/include/c++/10/bits/stl_vector.h:1203:30: note: declared here 1203 | push_back(value_type&& __x) | ~~~~~~~~~~~~~^~~ main.cpp: In member function 'int Graph::minWeightVertex(std::vector<int>&, std::vector<int>&)': main.cpp:350:12: warning: 'indexOfMin' may be used uninitialized in this function [-Wmaybe-uninitialized] 350 | return indexOfMin; | ^~~~~~~~~~ main.cpp: In member function 'void Graph::MST()': main.cpp:395:16: warning: 'sum' may be used uninitialized in this function [-Wmaybe-uninitialized] 395 | fout<<sum<<"\n"; | ^~~~ main.cpp:380:51: warning: 'indexOfMin' may be used uninitialized in this function [-Wmaybe-uninitialized] 380 | mst[weights[nextVertex][j].first] = nextVertex;