Compilare: user.cpp: In function ‘bool BFS()’: user.cpp:66:15: warning: unused variable ‘S2’ [-Wunused-variable] const int S2 = N + MAX_DIF + 3; ^ user.cpp: In function ‘void readData()’: user.cpp:33:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &N, &K, &A, &B); ^ user.cpp:35:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int x; scanf("%d", &x); ^