Compilare: user.cpp: In function ‘void add_letter(char)’: user.cpp:23:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(p=last;p!=-1 && !sa[p].next[c];p=sa[p].link) sa[p].next[c]=now; ^ user.cpp:23:66: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(p=last;p!=-1 && !sa[p].next[c];p=sa[p].link) sa[p].next[c]=now; ^ user.cpp:27:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] int q=sa[p].next[c]; ^ user.cpp:38:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(;p!=-1 && sa[p].next[c]==q;p=sa[p].link) sa[p].next[c]=clone; ^ user.cpp:38:76: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(;p!=-1 && sa[p].next[c]==q;p=sa[p].link) sa[p].next[c]=clone; ^ user.cpp: In function ‘int Solve()’: user.cpp:51:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(sa[now].next[s[i]]) now=sa[now].next[s[i]]; ^ user.cpp:51:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(sa[now].next[s[i]]) now=sa[now].next[s[i]]; ^