Program chuong_trinh_mang;

uses crt;

Var n,i,max,ln,tong,k :longint;
    a,b : array [1..100] of longint;
Begin
repeat
Write ('Nhap N : ');REadln(n);
until n > 0;
max := 0;

tong := 1;
For i := 1 to n do
Begin
Write ('A[',i,']= ');Readln(A[i]);
b[I] := a[i];
while a[i] <> 0 do
Begin
k := a[i] mod 10;
tong := tong *k;
a[i] := a[i] div 10;
end;
If max <= tong then 
Begin
max := tong ;
ln := b[i];
end;
k := 0;
tong := 1;
end;
Write ('Lon nhat la : ',ln);

delay(5000);

end.

uses crt;
var i,n,max:longint; a:array[1..10000]of longint;
begin
clrscr;
   write('n=');readln(n);  
   for i:=1 to n Do 
      begin
         write('Nhap so thu ',i,': ');readln(A[i]);  
         max:=0;
         while a[i]<>0 do
            begin
               if a[i] mod 10>max then max:=a[i] mod 10;
               a[i]:=a[i] div 10;
            end;
         writeln('Chu so lon nha cua so thu ',i,' la: ',max);
      end;
readln
end.