{"trustable":false,"prependHtml":"\u003cscript\u003e window.katexOptions \u003d { disable: true }; \u003c/script\u003e\n\u003cscript type\u003d\"text/x-mathjax-config\"\u003e\n MathJax.Hub.Config({\n tex2jax: {\n inlineMath: [[\u0027$$$\u0027,\u0027$$$\u0027], [\u0027$\u0027,\u0027$\u0027]],\n displayMath: [[\u0027$$$$$$\u0027,\u0027$$$$$$\u0027], [\u0027$$\u0027,\u0027$$\u0027]]\n }\n });\n\u003c/script\u003e\n\u003cscript async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS-MML_HTMLorMML\" type\u003d\"text/javascript\"\u003e\u003c/script\u003e","sections":[{"title":"","value":{"format":"MD","content":" Most of you, no doubt, know the story of Newton and the falling apple and how it led to his discovery of the law of gravity. But how much do you know beyond that? Do you know what kind of man this great scientist was? or where he stands in the history of science? If you don\u0027t, or even if you do, read the following lesson.\nIsaac Newton was born on Christmas Day, 1642. He grew up in the English countryside. From the very first Newton was very much interested in the mysteries of nature. One of the most difficult scientific problems of Newton\u0027s day was about the question of motion1. Why did objects move? Scientists could see that stones rolled down hills, that wind blew leaves along the ground, and heavy objects fell to the earth when dropped.\nAfter Copernicus, they began to admit that the earth itself moved. \"Were there laws that govern these various kinds of motion?\" they asked themselves. The Greeks had believed there were different rules for motion on earth and in space, and that there were unnatural2 movements on the surface of the earth. now he have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A and B. "}},{"title":"Input","value":{"format":"MD","content":"The first line of the input contains an integer T (1 \u003c\u003d T \u003c\u003d 20), which means the number of test cases. Then T lines follow, each line consists of two positive integers, A and B. Notice that the integers are very large, that means you should **NOT** process them by using 32-bit integer. You may assume the length of each integer will not exceed 1000."}},{"title":"Output","value":{"format":"MD","content":"For each test case, you should output two lines. The first line is \"Case #:\", # means the number of the test case. The second line is the an equation \"A + B \u003d Sum\", Sum means the result of A + B. Note there are some spaces int the equation. Output a blank line between two test cases. "}},{"title":"Sample Input","value":{"format":"MD","content":"2\n1 2\n3 4"}},{"title":"Sample Output","value":{"format":"MD","content":"Case 1:\n1 + 2 \u003d 3\n\nCase 2:\n3 + 4 \u003d 7\n"}}]}