Compilare: main.cpp: In function 'int bfs(int)': main.cpp:27:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for(i=0; i<adj[curr].size(); i++) | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:65:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for(i=0; i<adj[n].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp:49:13: warning: unused variable 'j' [-Wunused-variable] 49 | int n,i,j,k,l,a,b,x,m,curr; | ^ main.cpp:49:17: warning: unused variable 'l' [-Wunused-variable] 49 | int n,i,j,k,l,a,b,x,m,curr; | ^