Compilare: main.cpp: In function 'void nextt()': main.cpp:9:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(sir,1,lim,stdin),u=0; ^ main.cpp: In function 'int main()': main.cpp:28:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("plantatie.in","r",stdin); ^ main.cpp:29:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("plantatie.out","w",stdout); ^ main.cpp:31:8: warning: iteration 503 invokes undefined behavior [-Waggressive-loop-optimizations] lg[i]=lg[(i>>1)]+1; ~~~~~^~~~~~~~~~~~~ main.cpp:30:15: note: within this loop for(int i=2;i<=505;++i) ~^~~~~