#描述#
Swap cols 2 and 4 Swap rows 2 and 3
<BR>
99 6 2 9 99 6 2 9
<BR>
7 1 4 5 -> 3 11 10 8
<BR>
3 11 10 8 7 1 4 5

#格式#
##输入格式##
The input consists of several instances, each of them consisting of a single line. Each line of the input contains two numbers X and Y in Fibonacci base separated by a single space. Each of the numbers has at most 40 digits. The end of input is not marked in any special way.

##输出格式##
The output for each instance should be formatted as follows:

The first line contains the number X in the canonical representation, possibly padded from left by spaces. The second line starts with a plus sign followed by the number Y in the canonical representation, possibly padded from left by spaces. The third line starts by two spaces followed by a string of minus signs of the same length as the result of the addition. The fourth line starts by two spaces immediately followed by the canonical representation of X + Y. Both X and Y are padded from left by spaces so that the least significant digits of X, Y and X + Y are in the same column of the output. The output for each instance is followed by an empty line.

#样例1#
##样例输入1##

11101 1101
1 1

##样例输出1##

   100101
+   10001
  -------
  1001000

   1
+  1
  --
  10

#限制#
20000ms
32768KB

#提示#

#来源#