Compilare: main.cpp: In function 'int main()': main.cpp:14:18: warning: array subscript has type 'char' [-Wchar-subscripts] b[n]=pd[s[n][0]]+1; ^ main.cpp:15:25: warning: array subscript has type 'char' [-Wchar-subscripts] pred[n]=pdprev[s[n][0]]; ^ main.cpp:16:25: warning: array subscript has type 'char' [-Wchar-subscripts] if(b[n]>pd[s[n].back()]) ^ main.cpp:18:18: warning: array subscript has type 'char' [-Wchar-subscripts] pd[s[n].back()]=b[n]; ^ main.cpp:19:22: warning: array subscript has type 'char' [-Wchar-subscripts] pdprev[s[n].back()]=n; ^