Compilare: user.cpp: In function ‘int Letter(long long int, long long int, bool)’: user.cpp:51:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] vipChCountNormal = sum[n][vipCh]; ^ user.cpp:52:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] vipChCountFlipped = sum[n][flip(vipCh)]; ^ user.cpp:54:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] cnt = sum[p][flip(vipCh)]; ^ user.cpp:56:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] cnt = sum[p][vipCh]; ^ user.cpp:78:1: warning: control reaches end of non-void function [-Wreturn-type] } ^