Compilare: user.cpp: In function ‘int organize()’: user.cpp:42:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] const int next = pos[lst[i]][pos[lst[i]][0]--]; ^ user.cpp:42:48: warning: array subscript has type ‘char’ [-Wchar-subscripts] const int next = pos[lst[i]][pos[lst[i]][0]--]; ^ user.cpp: In function ‘int operations()’: user.cpp:60:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] pos[fst[i]][++pos[fst[i]][0]] = i; ^ user.cpp:60:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] pos[fst[i]][++pos[fst[i]][0]] = i; ^ user.cpp:62:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[fst[i]]++; ^ user.cpp:63:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[lst[i]]--; ^ user.cpp:74:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( ap[it] != 0 ) ^