poj2752 水题

 1 var s:ansistring;
 2     ans,pre:array[0..10000] of longint;
 3     i,k,tot:longint;
 4 procedure main;
 5  begin
 6  pre[1]:=0;k:=0;
 7  for i:=2 to length(s) do
 8   begin
 9   while (k<>0) and (s[k+1]<>s[i]) do k:=pre[k];
10   if s[k+1]=s[i] then inc(k);
11   pre[i]:=k;
12   end;
13  k:=pre[length(s)];
14  tot:=0;
15  while k<>0 do
16   begin
17   inc(tot);ans[tot]:=k;
18   k:=pre[k];
19   end;
20  for i:=tot downto 1 do write(ans[i],‘ ‘);
21  writeln(length(s));
22  end;
23 begin
24  while true do
25   begin
26   readln(s);if s=‘‘ then break;
27   main;
28   end;
29 end.