Compilare: user.cpp: In function 'void solve()': user.cpp:32: warning: array subscript has type 'char' user.cpp:33: warning: array subscript has type 'char' user.cpp:40: warning: array subscript has type 'char' user.cpp:41: warning: array subscript has type 'char' user.cpp:48: warning: array subscript has type 'char' user.cpp:49: warning: array subscript has type 'char' user.cpp:56: warning: array subscript has type 'char' user.cpp:57: warning: array subscript has type 'char'