Compilare: user.cpp: In function ‘void add(char, char, char, char, int)’: user.cpp:24:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (last[f1][of1][f2][of2] != i) ^ user.cpp:24:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (last[f1][of1][f2][of2] != i) ^ user.cpp:24:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (last[f1][of1][f2][of2] != i) ^ user.cpp:24:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (last[f1][of1][f2][of2] != i) ^ user.cpp:25:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] ans = max(ans, ++dp[f1][of1][f2][of2]); ^ user.cpp:25:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] ans = max(ans, ++dp[f1][of1][f2][of2]); ^ user.cpp:25:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] ans = max(ans, ++dp[f1][of1][f2][of2]); ^ user.cpp:25:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] ans = max(ans, ++dp[f1][of1][f2][of2]); ^ user.cpp:26:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] last[f1][of1][f2][of2] = i; ^ user.cpp:26:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] last[f1][of1][f2][of2] = i; ^ user.cpp:26:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] last[f1][of1][f2][of2] = i; ^ user.cpp:26:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] last[f1][of1][f2][of2] = i; ^