求救~！！！！！！！！！！！！！！循环问题

function R1equR :boolean;
var i,j,t1,t2:integer;
begin
for i:=1 to n do
           for j:=1 to n do
           begin
           if rr[i,j]<>r[i,j] then r[i,j]:=rr[i,j]
                              else R1equR:=true;
           end;
end;

求救：下列运行会出现死循环，请高手帮我看看问题在哪？
谢谢！！！！！！！！！！！！！！！！！！！r矩阵是33阶的
begin
if  RadioButton45.Checked then     //传递闭包法
begin
for i:=1 to n do
    begin
     R[i,i]:=1; //修正错误
    end;
  js0:=0;
   while js0=1 do     //求传递闭包
    begin
    for i:=1 to n do
     for j:=1 to n do
       begin
         rr[i,j]:=0;
         temp:=0;
         for k:=1 to n do
           begin
            if r[i,k]<r[k,j]
            then temp:=r[i,k]
            else temp:=r[k,j];
             if rr[i,j]<temp
             then rr[i,j]:=temp;
             end;
             js0:=js0+1;
             end;
    if r1equr then break; //跳出WHIEL 循环
end;