Eroare de compilare: user.cpp: In function ‘void bfs(long int)’: user.cpp:13: error: ‘n’ was not declared in this scope user.cpp:14: error: ‘sol’ was not declared in this scope user.cpp:15: error: ‘sol’ was not declared in this scope user.cpp:16: error: ‘lungime’ was not declared in this scope user.cpp:17: error: ‘a’ was not declared in this scope user.cpp:19: error: ‘vecini’ was not declared in this scope user.cpp: At global scope: user.cpp:26: error: expected declaration before ‘}’ token