Compilare: main.cpp: In function 'void atribuie(int, int, int, int)': main.cpp:157:33: warning: narrowing conversion of 'h2' from 'long long int' to 'int' inside { } [-Wnarrowing] M[h].push_front({h2, {x, y}}); ^ main.cpp: In member function 'char InParser::read_ch()': main.cpp:78:29: 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); ^ main.cpp: In function 'std::pair<int, int> val(int, int)': main.cpp:170:1: warning: control reaches end of non-void function [-Wreturn-type] } ^