Compilare: main.cpp: In function 'int hashf(std::__cxx11::string)': main.cpp:42:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<a.size(); i++) ~^~~~~~~~~ main.cpp: In function 'void read()': main.cpp:67:25: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while(c=fin.read_ch()) ^ main.cpp: In function 'void solve()': main.cpp:89:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<=sir.size()-wordSize; i++) ~^~~~~~~~~~~~~~~~~~~~~ main.cpp:107:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<sir.size()-wordSize) ~^~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:17:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^