{"trustable":false,"prependHtml":"\u003cstyle type\u003d\u0027text/css\u0027\u003e\n .input, .output {\n border: 1px solid #888888;\n }\n .output {\n margin-bottom: 1em;\n position: relative;\n top: -1px;\n }\n .output pre, .input pre {\n background-color: #EFEFEF;\n line-height: 1.25em;\n margin: 0;\n padding: 0.25em;\n }\n \u003c/style\u003e\n \u003clink rel\u003d\"stylesheet\" href\u003d\"//codeforces.org/s/96598/css/problem-statement.css\" type\u003d\"text/css\" /\u003e\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 type\u003d\"text/javascript\" async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS_HTML-full\"\u003e\u003c/script\u003e","sections":[{"title":"Examples","value":{"format":"HTML","content":"\u003cdiv class\u003d\"sample-test\"\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Input\n \u003c/div\u003e\n \u003cpre\u003e4 3\u003cbr\u003e2 1\u003cbr\u003e1 3\u003cbr\u003e4 3\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Output\n \u003c/div\u003e\n \u003cpre\u003e1\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Input\n \u003c/div\u003e\n \u003cpre\u003e5 5\u003cbr\u003e2 1\u003cbr\u003e1 3\u003cbr\u003e2 3\u003cbr\u003e2 5\u003cbr\u003e4 3\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Output\n \u003c/div\u003e\n \u003cpre\u003e0\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Input\n \u003c/div\u003e\n \u003cpre\u003e6 5\u003cbr\u003e1 2\u003cbr\u003e2 3\u003cbr\u003e4 5\u003cbr\u003e4 6\u003cbr\u003e5 6\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Output\n \u003c/div\u003e\n \u003cpre\u003e1\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n\u003c/div\u003e"}},{"title":"Note","value":{"format":"HTML","content":"\u003cp\u003eIn the first sample the following road orientation is allowed: \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/058a445ce75c1885d521d18251e4432e?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e, \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/a0a4d302107820a20210a77c4c694195?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e, \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/098698e1d79092038baf4df9a5baa289?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e.\u003c/p\u003e\n\u003cp\u003eThe second sample: \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/058a445ce75c1885d521d18251e4432e?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e, \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/7651545331332acf167fc29cf480c20c?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e, \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/82aed11d5aa1c448351449ada1898d3d?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e, \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/2103477b6a00e5437130ca951fdd9ad7?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e, \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/098698e1d79092038baf4df9a5baa289?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e.\u003c/p\u003e\n\u003cp\u003eThe third sample: \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/058a445ce75c1885d521d18251e4432e?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e, \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/82aed11d5aa1c448351449ada1898d3d?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e, \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/4921ee80fe6b6ee724a44fd30511ced9?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e, \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/3f35418d919f7b3a0b0b46d4c490f923?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e, \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" SRC\u003d\"CDN_BASE_URL/3f17bad1864e7f5ff0cba256b328ce6b?v\u003d1553068744\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e.\u003c/p\u003e"}}]}