Compilare: user.cpp:2:0: warning: ignoring #pragma optimize [-Wunknown-pragmas] #pragma optimize("Ofast") user.cpp:6:45: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) unsigned int get_number() ^~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:22:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("elmaj.in", "r", stdin); ^ user.cpp:23:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("elmaj.out", "w", stdout); ^ user.cpp:25:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(inBuffer, 1, 6000000, stdin); ^ user.cpp:33:9: warning: ‘candidate’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(x == candidate) ^~