0_0_32867435_20258.cpp:1:1: error: stray '\345' in program
<pre class="problem-content" style="box-sizing: border-box; overflow: auto; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 13px; padding: 9.5px; margin-top: 0px; margin-bottom: 10px; line-height: 1.42857143; color: rgb(51, 51, 51); word-break: break-all; word-wrap: break-word; border: 1px solid rgb(204, 204, 204); border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px; background-color: rgb(245, 245, 245);">ZYB喜欢研究Xor，现在他得到了一个长度为<span class="MathJax_Preview" style="box-sizing: border-box; color: rgb(136, 136, 136);"></span><span class="MathJax" id="MathJax-Element-1-Frame" role="textbox" aria-readonly="true" style="box-sizing: border-box; display: inline; line-height: normal; word-spacing: normal; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px;"><nobr style="box-sizing: border-box; transition: none; -webkit-transition: none; border: 0px; padding: 0px; margin: 0px; max-width: 5000em; max-height: 5000em; min-width: 0px; min-height: 0px; vertical-align: 0px;"><span class="math" id="MathJax-Span-1" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline-block; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; width: 0.635em;"><span style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline-block; position: relative; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; width: 0.575em; height: 0px; font-size: 14px;"><span style="box-sizing: border-box; transition: none; -webkit-transition: none; position: absolute; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; clip: rect(1.571em 1000em 2.455em -0.626em); top: -2.229em; left: 0em;"><span class="mrow" id="MathJax-Span-2" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px;"><span class="mi" id="MathJax-Span-3" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Math; font-style: italic;">n</span></span><span style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline-block; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; width: 0px; height: 2.229em;"></span></span></span><span style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline-block; position: static; border-width: 0px 0px 0px 0em; border-left-style: solid; padding: 0px; margin: 0px; vertical-align: -0.089em; overflow: hidden; width: 0px; height: 0.639em;"></span></span></nobr></span>的数组A。于是他想知道：对于所有数对<span class="MathJax_Preview" style="box-sizing: border-box; color: rgb(136, 136, 136);"></span><span class="MathJax" id="MathJax-Element-2-Frame" role="textbox" aria-readonly="true" style="box-sizing: border-box; display: inline; line-height: normal; word-spacing: normal; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px;"><nobr style="box-sizing: border-box; transition: none; -webkit-transition: none; border: 0px; padding: 0px; margin: 0px; max-width: 5000em; max-height: 5000em; min-width: 0px; min-height: 0px; vertical-align: 0px;"><span class="math" id="MathJax-Span-4" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline-block; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; width: 10.942em;"><span style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline-block; position: relative; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; width: 10.208em; height: 0px; font-size: 14px;"><span style="box-sizing: border-box; transition: none; -webkit-transition: none; position: absolute; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; clip: rect(1.263em 1000em 2.694em -0.553em); top: -2.229em; left: 0em;"><span class="mrow" id="MathJax-Span-5" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px;"><span class="mo" id="MathJax-Span-6" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">(</span><span class="mi" id="MathJax-Span-7" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Math; font-style: italic;">i</span><span class="mo" id="MathJax-Span-8" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">,</span><span class="mi" id="MathJax-Span-9" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px 0px 0px 0.167em; margin: 0px; vertical-align: 0px; font-family: MathJax_Math; font-style: italic;">j</span><span class="mo" id="MathJax-Span-10" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">)</span><span class="mo" id="MathJax-Span-11" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">(</span><span class="mi" id="MathJax-Span-12" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Math; font-style: italic;">i</span><span class="mo" id="MathJax-Span-13" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px 0px 0px 0.278em; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">∈</span><span class="mo" id="MathJax-Span-14" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px 0px 0px 0.278em; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">[</span><span class="mn" id="MathJax-Span-15" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">1</span><span class="mo" id="MathJax-Span-16" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">,</span><span class="mi" id="MathJax-Span-17" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px 0px 0px 0.167em; margin: 0px; vertical-align: 0px; font-family: MathJax_Math; font-style: italic;">n</span><span class="mo" id="MathJax-Span-18" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">]</span><span class="mo" id="MathJax-Span-19" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">,</span><span class="mi" id="MathJax-Span-20" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px 0px 0px 0.167em; margin: 0px; vertical-align: 0px; font-family: MathJax_Math; font-style: italic;">j</span><span class="mo" id="MathJax-Span-21" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px 0px 0px 0.278em; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">∈</span><span class="mo" id="MathJax-Span-22" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px 0px 0px 0.278em; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">[</span><span class="mn" id="MathJax-Span-23" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">1</span><span class="mo" id="MathJax-Span-24" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">,</span><span class="mi" id="MathJax-Span-25" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px 0px 0px 0.167em; margin: 0px; vertical-align: 0px; font-family: MathJax_Math; font-style: italic;">n</span><span class="mo" id="MathJax-Span-26" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical-align: 0px; font-family: MathJax_Main;">]</span><span class="mo" id="MathJax-Span-27" style="box-sizing: border-box; transition: none; -webkit-transition: none; display: inline; position: static; border: 0px; padding: 0px; margin: 0px; vertical
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