Compilare: user.cpp: In function ‘bool ok(int)’: user.cpp:13:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz1=poz[sir[0]][r]; ^ user.cpp:17:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (r+gr-1<fr[sir[jj-1]]) ^ user.cpp:19:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz1=poz[sir[jj-1]][r+gr-1]; ^ user.cpp:26:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (step<fr[sir[jj]]-1) ^ user.cpp:32:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (j+step<=fr[sir[jj]]-1&&poz[sir[jj]][j+step]<=poz1) ^ user.cpp:32:51: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (j+step<=fr[sir[jj]]-1&&poz[sir[jj]][j+step]<=poz1) ^ user.cpp:37:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (poz[sir[jj]][j]<=poz1) ^ user.cpp:43:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (r+gr-1<fr[sir[jj-1]]) ^ user.cpp:45:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz1=poz[sir[jj-1]][r+gr-1]; ^ user.cpp: In function ‘int main()’: user.cpp:80:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz[v[j]].push_back(j); ^ user.cpp:81:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr[v[j]]++; ^ user.cpp: In function ‘int cb(int)’: user.cpp:69:12: warning: ‘nani’ may be used uninitialized in this function [-Wmaybe-uninitialized] return nani; ^~~~