Compilare: user.cpp:9: warning: ‘typedef’ was ignored in this declaration user.cpp:10: warning: ‘typedef’ was ignored in this declaration user.cpp: In function ‘void read()’: user.cpp:71: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:73: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void solve()’: user.cpp:105: warning: comparison between signed and unsigned integer expressions