Compilare: user.cpp: In function ‘void dijkstra(ll)’: user.cpp:93:18: warning: narrowing conversion of ‘add[1]’ from ‘ll {aka long long int}’ to ‘int’ inside { } [-Wnarrowing] d[1] = {add[1], 1}; ~~~~~^ user.cpp: In member function ‘char InParser::read_ch()’: user.cpp:17:38: 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); ^