You: What's the score? Did I miss much? Me: It's 2-1 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 \textbf{2}-\textbf{1} 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 \textbf{2}-\textbf{1} 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 \textbf{3} possibilities. Me: And what if the score was \textbf{3}-\textbf{2}? What would you have done then? You: I would have to work for \textbf{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. \InputFile Your program will be tested on one or more test cases. Each test case specifies two natural numbers (\textbf{A} and \textbf{B}) (separated by one or more spaces) representing the score of the first half. No team will be able to score more than \textbf{10} goals. The last line of the input file contains two \textbf{-1}'s (which is not part of the test cases.) \OutputFile Format For each test case where the number of possibilities is equal to the sum, print: \textbf{A}+\textbf{B}=\textbf{C} Where \textbf{A} and \textbf{B} are as above and \textbf{C} is their sum. If the number of possibilities is not equal to the sum, replace the '\textbf{=}' sign with '\textbf{!=}' (without the quotes.)