Compilare: user.cpp: In function ‘void solve()’: user.cpp:72: warning: unused variable ‘ttt’ user.cpp:73: warning: unused variable ‘qqq’ user.cpp:62: warning: unused variable ‘j’ user.cpp:62: warning: unused variable ‘k’ user.cpp: In function ‘int main()’: user.cpp:99: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:100: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:103: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:106: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result