Compilare: user.cpp: In function ‘void Read()’: user.cpp:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void Solve()’: user.cpp:38: warning: comparison between signed and unsigned integer expressions