Compilare: user.cpp: In function ‘int kk(int)’: user.cpp:114:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int32_t main()’: user.cpp:117:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("combinari.in","r",stdin); ^ user.cpp:118:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("combinari.out","w",stdout); ^