Compilare: user.cpp: In function ‘void read()’: user.cpp:38:23: warning: unused variable ‘dist’ [-Wunused-variable] int x = 0, y = 0, dist = 0; ^~~~ user.cpp:39:9: warning: unused variable ‘nod_pereche’ [-Wunused-variable] Nod nod_pereche; ^~~~~~~~~~~ user.cpp: In function ‘void bfs(int)’: user.cpp:60:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[nod].size(); i++) { ~~^~~~~~~~~~~~~~~ user.cpp: In function ‘void read()’: user.cpp:37:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFile, "%d", &n); ^ user.cpp:42:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(pFile, "%d %d", &x, &y); ^