{"trustable":true,"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":"","value":{"format":"HTML","content":"\u003cp\u003eYou are given a sequence of signed 64-bit integers defined as follows: \u003c/p\u003e\u003cul\u003e \u003cli\u003e \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ex\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e0\u003c/sub\u003e \u003d 1\u003c/span\u003e, \u003c/li\u003e\u003cli\u003e \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" src\u003d\"CDN_BASE_URL/c11fdf3fda9eea376f63fcbb6dca396c?v\u003d1715738717\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e, \u003c/li\u003e\u003c/ul\u003e where \u003cspan class\u003d\"tex-font-style-tt\"\u003emod\u003c/span\u003e is a remainder operator. All arithmetic operations are evaluated without overflow checking. Use standard \"remainder\" operator for programming languages (it differs from the mathematical version; for example \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" src\u003d\"CDN_BASE_URL/3b89603fb719dde6ab1c71389dbd916b?v\u003d1715738717\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e in programming, while \u003cimg align\u003d\"middle\" class\u003d\"tex-formula\" src\u003d\"CDN_BASE_URL/2da7b4e35bd64da1b0c2228be47e7cee?v\u003d1715738717\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e in mathematics). Use \"\u003cspan class\u003d\"tex-font-style-tt\"\u003elong long\u003c/span\u003e\" type in C++, \"\u003cspan class\u003d\"tex-font-style-tt\"\u003elong\u003c/span\u003e\" in Java and \"\u003cspan class\u003d\"tex-font-style-tt\"\u003eint64\u003c/span\u003e\" in Delphi to store \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ex\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003ei\u003c/i\u003e\u003c/sub\u003e\u003c/span\u003e and all other values.\u003cp\u003eLet\u0027s call a sequence element \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ex\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003ep\u003c/i\u003e\u003c/sub\u003e\u003c/span\u003e \u003cspan class\u003d\"tex-font-style-it\"\u003erepeatable\u003c/span\u003e if it occurs later in the sequence — meaning that there exists such \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eq\u003c/i\u003e\u003c/span\u003e, \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eq\u003c/i\u003e \u0026gt; \u003ci\u003ep\u003c/i\u003e\u003c/span\u003e, that \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ex\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003eq\u003c/i\u003e\u003c/sub\u003e \u003d \u003ci\u003ex\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003ep\u003c/i\u003e\u003c/sub\u003e\u003c/span\u003e. The \u003cspan class\u003d\"tex-font-style-it\"\u003efirst repeatable\u003c/span\u003e element \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eM\u003c/i\u003e\u003c/span\u003e of the sequence is such an element \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ex\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003em\u003c/i\u003e\u003c/sub\u003e\u003c/span\u003e that \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ex\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003em\u003c/i\u003e\u003c/sub\u003e\u003c/span\u003e is \u003cspan class\u003d\"tex-font-style-it\"\u003erepeatable\u003c/span\u003e, and none of the \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ex\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003ep\u003c/i\u003e\u003c/sub\u003e\u003c/span\u003e where \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ep\u003c/i\u003e \u0026lt; \u003ci\u003em\u003c/i\u003e\u003c/span\u003e are \u003cspan class\u003d\"tex-font-style-it\"\u003erepeatable\u003c/span\u003e.\u003c/p\u003e\u003cp\u003eGiven \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eA\u003c/i\u003e\u003c/span\u003e, \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eB\u003c/i\u003e\u003c/span\u003e and \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eC\u003c/i\u003e\u003c/span\u003e, your task is to find the index of the second occurrence of the \u003cspan class\u003d\"tex-font-style-it\"\u003efirst repeatable\u003c/span\u003e element \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eM\u003c/i\u003e\u003c/span\u003e in the sequence if the index is less or equal to \u003cspan class\u003d\"tex-span\"\u003e2·10\u003csup class\u003d\"upper-index\"\u003e7\u003c/sup\u003e\u003c/span\u003e. Per definition, the first element of the sequence has index \u003cspan class\u003d\"tex-span\"\u003e0\u003c/span\u003e.\u003c/p\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cp\u003eThe only line of input contains three signed 64-bit integers: \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eA\u003c/i\u003e\u003c/span\u003e, \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eB\u003c/i\u003e\u003c/span\u003e and \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eC\u003c/i\u003e\u003c/span\u003e (\u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eB\u003c/i\u003e \u0026gt; 0, \u003ci\u003eC\u003c/i\u003e \u0026gt; 0\u003c/span\u003e).\u003c/p\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cp\u003ePrint a single integer \u0026nbsp;— the index of the second occurence of the \u003cspan class\u003d\"tex-font-style-it\"\u003efirst repeatable\u003c/span\u003e member if it is less or equal to \u003cspan class\u003d\"tex-span\"\u003e2·10\u003csup class\u003d\"upper-index\"\u003e7\u003c/sup\u003e\u003c/span\u003e. Print \u003cspan class\u003d\"tex-span\"\u003e - 1\u003c/span\u003e if the index is more than \u003cspan class\u003d\"tex-span\"\u003e2·10\u003csup class\u003d\"upper-index\"\u003e7\u003c/sup\u003e\u003c/span\u003e.\u003c/p\u003e"}},{"title":"Examples","value":{"format":"HTML","content":"\u003ctable class\u003d\u0027vjudge_sample\u0027\u003e\n\u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eInput\u003c/th\u003e\n \u003cth\u003eOutput\u003c/th\u003e\n \u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cpre\u003e2 2 9\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e4\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}},{"title":"","value":{"format":"HTML","content":"\u003ctable class\u003d\u0027vjudge_sample\u0027\u003e\n\u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eInput\u003c/th\u003e\n \u003cth\u003eOutput\u003c/th\u003e\n \u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cpre\u003e2305843009213693951 1 9223372036854775807\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e5\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}},{"title":"","value":{"format":"HTML","content":"\u003ctable class\u003d\u0027vjudge_sample\u0027\u003e\n\u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eInput\u003c/th\u003e\n \u003cth\u003eOutput\u003c/th\u003e\n \u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cpre\u003e-2 1 5\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e4\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}},{"title":"Note","value":{"format":"HTML","content":"\u003cp\u003eIn the first sample test the sequence starts with the following numbers: 1, 3, 7, 6, 3, 7. The \u003cspan class\u003d\"tex-font-style-it\"\u003efirst repeatable\u003c/span\u003e element is 3. The second occurence of 3 has index 4. \u003c/p\u003e\u003cp\u003eIn the second sample test the sequence starts with the following numbers: 1, 2305843009213693951, -4611686018427387903, 6917529027641081855, 0, 0, 0. The \u003cspan class\u003d\"tex-font-style-it\"\u003efirst repeatable\u003c/span\u003e element is 0. The second occurence of 0 has index 5. \u003c/p\u003e\u003cp\u003eIn the third sample test the sequence starts with the following numbers: 1, -2, 4, -3, 1, -2, 4. The \u003cspan class\u003d\"tex-font-style-it\"\u003efirst repeatable\u003c/span\u003e element is 1. The second occurence of 1 has index 4.\u003c/p\u003e"}}]}