MAX = 500; 
curValue = unifInt(0,500); 
tgtValue = unifInt(0,500); 
count = 1; 
guard = 0;
if (-5 > curValue - tgtValue) then guard = 1 else if (curValue - tgtValue > 5) then guard = 1 else guard = 0 end end;
print guard;
while (guard > 0) do
  delta = (tgtValue - curValue);
  if (delta < 0) then
      if (delta > -25) then
          d = delta + unifInt(-10,10)
      else 
          if (delta > -50) then
              d = delta + unifInt(-20,20)
          else
	      if (delta > -100) then
                  d = delta + unifInt(-50,50)
	      else
		  d = delta + unifInt(-100,100)
	      end
      	  end
      end
  else
      if (delta <25 ) then
          d = delta + unifInt(-10,10)
      else
          if (delta < 50) then
              d = delta + unifInt(-20,20)
          else
              if (delta > 100) then
                  d = delta + unifInt(-50,50)
	      else
		  d = delta + unifInt(-100,100)
	      end
          end
      end
  end;
  curValue = curValue + d;

  if (curValue > MAX) then
      curValue = MAX end;

  if (curValue < 1) then
      curValue = 1 end;

  newDelta = curValue - tgtValue;
  if (-5 > newDelta) then guard = 1 else if (newDelta > 5) then guard = 1 else guard = 0 end end;
  count = count + 1
end;
print count;
estimateProb (count <= 20);