{"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":"HTML","content":"\u003cdiv\u003e\n你的任务是计算a+b。\n\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cp\u003e输入由一系列成对的由空格分割的整数a和b构成,一对输入占用一行。\n\u003c/p\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cp\u003e对于每一组的输入,要求一行输出它们的和,另一行输出空行,对于最后一组,输出完空行之后仍要换行。\n\u003c/p\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre\u003e\n1 5\n10 20\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre\u003e6\n\n30\n \u003c/pre\u003e"}}]}