ANARC08E  Relax! It is just a game
You: What's the score? Did I miss much?
Me: It's 21 for elAhli and the second half just started. The first half was quite boring.
You: Who scored first? elAhli or ezZamalek?
Me: What difference does it make?
You: Big difference! I can predict the outcome of the match if I knew the order of which goals were scored in the first half.
Me: What do you mean?
You: It's 21 for elAhli, right? One of three things could have happened: elAhli scored two goals then ezZamalek scored; Or, elAhli scored its first goal, then ezZamalek, then elAhli again; Or, ezZamalek scored first, then elAhli scored its two goals.
Me: So?!! I still don't understand what difference does that make? It's still 21 for elAhli! Why don't you just relax and let us continue watching the game in peace.
You: You don't understand!! I believe the probability of who'll win depends on the order of how goals were scored. Now I have to predict the outcome for 3 possibilities.
Me: And what if the score was 32? What would you have done then?
You: I would have to work for 5 different possibilities. No?
Me: Of course not! The number of possibilities isn't always equal to the sum.
You: Can you tell me when will it be equal to the sum?
Me: You're a programmer, why don't you write a program that counts the number of possibilities and compare it to the sum?
You: I don't have the time, I want to watch the match. Besides, I have nine other problems to worry about.
Me: I'll give you a hint. The possibilities will be equal to the sum only if one of the teams scored a certain number of goals.
Input
Your program will be tested on one or more test cases. Each test case specifies two natural numbers (A and B ) (separated by one or more spaces) representing the score of the first half. No team will be able to score more than 10 goals. The last line of the input file contains two 1's (which is not part of the test cases.)
Output
Format For each test case where the number of possibilities is equal to the sum, print:
A+B=C
Where A and B are as above and C is their sum. If the number of possibilities is not equal to the sum, replace the '=' sign with '!=' (without the quotes.)
Example
Input: 2 1 1 0 1 1 Output: 2+1=3 1+0=1
hide comments
Vicky:
20150812 19:14:02
easy one just understand this line The possibilities will be equal to the sum only if one of the teams scored a certain number of goals. 

Vicky:
20150812 19:03:47
easy one just understand this line The possibilities will be equal to the sum only if one of the teams scored a certain number of goals. 

Seven.Martinez:
20150323 21:53:57
finally... 

Ankur Singh:
20150209 13:07:18
there is a hint line in the question.. 

agaurav77:
20141209 10:06:34
Don't think too much to solve this one. If it were not for the hint given, then it would be a standard P&C question.(placing A items with B items, ordering within groups unimportant) 

saurabh:
20140705 16:47:45
GOOD QUESTION.....


Trishla Sancheti:
20140605 08:36:48
In the input its written natural numbers... but in test case there's a zero ignore that.


fallacy:
20140601 00:27:21
what happens if a and b equals zero? 

Bartosz Magry¶:
20131124 08:05:30
there is missing an information about case when team A and B scored any goal (0+0=0 or 0+0!=0, nevertheless then there are no possibilities and it is an equal to 0), i can be wrong but it's my thinking now Last edit: 20131124 08:06:15 

Lai Manh Tuan:
20130115 18:22:41
WA because I did not read the description carefully

Added by:  Ahmed Aly 
Date:  20090704 
Time limit:  1s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ERL JSRHINO NODEJS PERL6 VB.NET 
Resource:  ANARC 2008 