Compilare: user.cpp: In function ‘void Solve(int)’: user.cpp:158: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:184: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:185: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:187: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:190: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result