Compilare: main.cpp: In function 'void Read()': main.cpp:37:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("lca.in","r",stdin); ^ main.cpp: In function 'void ReadValue(int&)': main.cpp:20:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(Buffer, 1, Size, stdin); ^ main.cpp:28:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(Buffer, 1, Size, stdin); ^