Compilare: user.cpp: In function 'int solve(int, int, int)': user.cpp:34: warning: array subscript has type 'char' user.cpp:54: warning: array subscript has type 'char' user.cpp:67: warning: array subscript has type 'char' user.cpp:67: warning: array subscript has type 'char' user.cpp:73: warning: array subscript has type 'char' user.cpp:76: warning: array subscript has type 'char' user.cpp:78: warning: array subscript has type 'char' user.cpp:70: warning: 'which' may be used uninitialized in this function