Compilare: user.cpp: In function ‘void BFS(int, int)’: user.cpp:77: warning: pointer to a function used in arithmetic user.cpp:77: warning: pointer to a function used in arithmetic user.cpp: In function ‘int main()’: user.cpp:89: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:90: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:92: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:96: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘bool Valid(int, int)’: user.cpp:57: warning: control reaches end of non-void function