{"trustable":false,"prependHtml":"\u003cstyle type\u003d\"text/css\"\u003e\n section pre {\n display: block;\n padding: 9.5px;\n margin: 0 0 10px;\n font-size: 13px;\n line-height: 1.42857143;\n word-break: break-all;\n word-wrap: break-word;\n color: #333;\n background: rgba(255, 255, 255, 0.5);\n border: 1px solid #ccc;\n border-radius: 6px;\n }\n\u003c/style\u003e\n\u003cscript\u003e\n window.katexOptions \u003d {\n delimiters: [\n {left: \u0027\\\\(\u0027, right: \u0027\\\\)\u0027, display: false},\n {left: \u0027\\\\[\u0027, right: \u0027\\\\]\u0027, display: true}\n ]\n };\n\u003c/script\u003e\n","sections":[{"title":"Problem Statement","value":{"format":"HTML","content":"\n\u003csection\u003e\n\u003cp\u003eRingo loves the integer \u003cvar\u003e\\(200\\)\u003c/var\u003e. Solve the problem below for him.\u003cbr\u003e\nGiven a sequence \u003cvar\u003e\\(A\\)\u003c/var\u003e of \u003cvar\u003e\\(N\\)\u003c/var\u003e positive integers, find the pair of integers \u003cvar\u003e\\((i, j)\\)\u003c/var\u003e satisfying all of the following conditions:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cvar\u003e\\(1 \\le i \u0026lt; j \\le N\\)\u003c/var\u003e;\u003c/li\u003e\n\u003cli\u003e\u003cvar\u003e\\(A_i - A_j\\)\u003c/var\u003e is a multiple of \u003cvar\u003e\\(200\\)\u003c/var\u003e.\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/section\u003e\n"}},{"title":"Constraints","value":{"format":"HTML","content":"\n\u003csection\u003e\n\u003cul\u003e\n\u003cli\u003eAll values in input are integers.\u003c/li\u003e\n\u003cli\u003e\u003cvar\u003e\\(2 \\le N \\le 2 \\times 10^5\\)\u003c/var\u003e\u003c/li\u003e\n\u003cli\u003e\u003cvar\u003e\\(1 \\le A_i \\le 10^9\\)\u003c/var\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/section\u003e\n"}},{"title":"Input","value":{"format":"HTML","content":"\n\u003csection\u003e\n\u003cp\u003eInput is given from Standard Input in the following format:\u003c/p\u003e\n\u003cpre\u003e\u003cvar\u003e\\(N\\)\u003c/var\u003e\n\u003cvar\u003e\\(A_1\\)\u003c/var\u003e \u003cvar\u003e\\(A_2\\)\u003c/var\u003e \u003cvar\u003e\\(\\dots\\)\u003c/var\u003e \u003cvar\u003e\\(A_N\\)\u003c/var\u003e\n\u003c/pre\u003e\n\u003c/section\u003e\n"}},{"title":"Output","value":{"format":"HTML","content":"\n\u003csection\u003e\n\u003cp\u003ePrint the answer as an integer.\u003c/p\u003e\n\u003c/section\u003e\n"}},{"title":"Sample 1","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\u003e6\n123 223 123 523 200 2000\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\n\u003csection\u003e\n\n\u003c/section\u003e\n\n\u003csection\u003e\n\n\u003cp\u003eFor example, for \u003cvar\u003e\\((i, j) \u003d (1, 3)\\)\u003c/var\u003e, \u003cvar\u003e\\(A_1 - A_3 \u003d 0\\)\u003c/var\u003e is a multiple of \u003cvar\u003e\\(200\\)\u003c/var\u003e.\u003cbr\u003e\nWe have four pairs satisfying the conditions: \u003cvar\u003e\\((i,j)\u003d(1,3),(1,4),(3,4),(5,6)\\)\u003c/var\u003e.\u003c/p\u003e\n\u003c/section\u003e\n"}},{"title":"Sample 2","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\u003e5\n1 2 3 4 5\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e0\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n\n\u003csection\u003e\n\n\u003c/section\u003e\n\n\u003csection\u003e\n\n\u003cp\u003eThere may be no pair satisfying the conditions.\u003c/p\u003e\n\u003c/section\u003e\n"}},{"title":"Sample 3","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\u003e8\n199 100 200 400 300 500 600 200\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e9\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n\n\u003csection\u003e\n\n\u003c/section\u003e\n\n\u003csection\u003e\n\u003c/section\u003e\n"}}]}