Compilare: main.cpp: In member function 'int arbre::bfs(int)': main.cpp:56:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i < edges[nod].size(); i++){ ~~^~~~~~~~~~~~~~~~~~~ main.cpp: At global scope: main.cpp:12:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) int get_int() ^~~~~~~ main.cpp: In function 'int get_int()': main.cpp:19:28: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] ++p != BUFFER_SIZE || (fread(inBuffer, 1, BUFFER_SIZE, stdin), p = 0); ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:25:28: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] ++p != BUFFER_SIZE || (fread(inBuffer, 1, BUFFER_SIZE, stdin), p = 0); ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:84:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("darb.in", "r", stdin); ^ main.cpp:85:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("darb.out", "w", stdout); ^ main.cpp: In member function 'int arbre::bfs(int)': main.cpp:72:9: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] llast = last; ~~~~~~^~~~~~