Compilare: main.cpp: In function 'int32_t main()': main.cpp:37:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<d.size();i++) ~^~~~~~~~~ main.cpp:41:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<d.size();i++) ~^~~~~~~~~ main.cpp:20:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("supersenzor.in","r",stdin); ^ main.cpp:21:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("supersenzor,out","w",stdout); ^