Compilare: user.cpp: In function ‘void back(int, int)’: user.cpp:29:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(f[i]==0) ^ user.cpp:31:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[i]=1; ^ user.cpp:32:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(tt+d[l[pz]][l[i]]<=mn) ^ user.cpp:32:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(tt+d[l[pz]][l[i]]<=mn) ^ user.cpp:32:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(tt+d[l[pz]][l[i]]<=mn) ^ user.cpp:33:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] back(pz+1, tt+d[l[pz]][l[i]]); ^ user.cpp:33:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] back(pz+1, tt+d[l[pz]][l[i]]); ^ user.cpp:33:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] back(pz+1, tt+d[l[pz]][l[i]]); ^ user.cpp:34:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[i]=0; ^ user.cpp: In function ‘int main()’: user.cpp:85:82: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[i+(1<<j)+(1<<fst)]=min(dp[i+(1<<j)+(1<<fst)], dp[i]+d[l[j]][l[fst]]); ^ user.cpp:85:90: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[i+(1<<j)+(1<<fst)]=min(dp[i+(1<<j)+(1<<fst)], dp[i]+d[l[j]][l[fst]]); ^