Compilare: main.cpp: In function 'int main()': main.cpp:119:20: warning: large integer implicitly truncated to unsigned type [-Woverflow] D[i].first=infinit; ^~~~~~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:21:29: 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); ^