Compilare: user.cpp: In function 'char get(int, char)': user.cpp:14: warning: array subscript has type 'char' user.cpp: In function 'void set(int, char, char)': user.cpp:15: warning: array subscript has type 'char' user.cpp: In function 'void solve()': user.cpp:41: warning: array subscript has type 'char' user.cpp:46: warning: array subscript has type 'char' user.cpp:46: warning: array subscript has type 'char'