Compilare: main.cpp: In function 'int main()': main.cpp:39:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:41:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^ main.cpp: In function 'int BFS(int)': main.cpp:34:12: warning: 'curr' may be used uninitialized in this function [-Wmaybe-uninitialized] return curr; ^~~~