Eroare de compilare: main.cpp: In function 'void bfs(int)': main.cpp:27:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<nod[el].size();i++){ ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:44:10: error: 'i' was not declared in this scope for (i=1; i<n; i++){ ^ main.cpp:45:14: error: 'x' was not declared in this scope f >> x >> y; ^ main.cpp:45:19: error: 'y' was not declared in this scope f >> x >> y; ^ main.cpp:46:9: error: 'adj' was not declared in this scope adj[x].push_back(y); ^~~ Non zero exit status: 1