Compilare: user.cpp: In function ‘void citire()’: user.cpp:14: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In member function ‘bool cmp::operator()(const int&, const int&) const’: user.cpp:30: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp: In function ‘int solve()’: user.cpp:57: warning: comparison between signed and unsigned integer expressions