Compilare: main.cpp: In function 'void bfs()': main.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(int i=0;i<v[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:44:18: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 44 | for(int i=1;i<=n;i++) | ~^~~ main.cpp: In function 'void init()': main.cpp:49:18: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 49 | for(int i=1;i<=n;i++) | ~^~~