ARITH

Time Limit: 1000 ms Memory Limit: 65536 KiB

Problem Description

One part of the new WAP portal is also a calculator computing expressions with very long numbers.
To make the output look better, the result is formated the same way as is it usually used with manual
calculations.
Your task is to write the core part of this calculator. Given two numbers and the requested operation,
you are to compute the result and print it in the form specified below. With addition and subtraction,
the numbers are written below each other. Multiplication is a little bit more complex: first of all, we
make a partial result for every digit of one of the numbers, and then sum the results together.
 

Input

 There is a single positive integer T on the first line of input (equal to about 1000). It stands for the
number of expressions to follow. Each expression consists of a single line containing a positive integer
number, an operator (one of +, - and *) and the second positive integer number. Every number has at
most 500 digits. There are no spaces on the line. If the operation is subtraction, the second number is
always lower than the first one. No number will begin with zero.
 

Output

 For each expression, print two lines with two given numbers, the second number below the first one,
last digits (representing unities) must be aligned in the same column. Put the operator right in front of
the first digit of the second number. After the second number, there must be a horizontal line made of
dashes (-).
For each addition or subtraction, put the result right below the horizontal line, with last digit aligned to
the last digit of both operands.
For each multiplication, multiply the first number by each digit of the second number. Put the partial
results one below the other, starting with the product of the last digit of the second number. Each
partial result should be aligned with the corresponding digit. That means the last digit of the partial
product must be in the same column as the digit of the second number. No product may begin with any
additional zeros. If a particular digit is zero, the product has exactly one digit -- zero. If the second
number has more than one digit, print another horizontal line under the partial results, and then print
the sum of them.
There must be minimal number of spaces on the beginning of lines, with respect to other constraints.
The horizontal line is always as long as necessary to reach the left and right end of both numbers (and
operators) directly below and above it. That means it begins in the same column where the leftmost
digit or operator of that two lines (one below and one above) is. It ends in the column where is the
rightmost digit of that two numbers. The line can be neither longer nor shorter than specified.
Print one blank line after each test case, including the last one.
 

Sample Input

4
12345+67890
324-111
325*4405
1234*4

Sample Output

 12345
+67890
------
 80235
 324
-111
----
 213
    325
  *4405
-----
   1625
     0
 1300
1300
-------
1431625
1234
  *4
----
4936

Hint

 

Source

ACM Central European Programming Contest, Prague 2000