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A+B Format
<div class="ques-view"><p>Calculate <span class="katex"><span class="katex-mathml"><math><mrow><mi>a</mi><mo>+</mo><mi>b</mi></mrow>a + b</math></span><span aria-hidden="true" class="katex-html"><span class="strut" style="height:0.69444em;"></span><span class="strut bottom" style="height:0.77777em;vertical-align:-0.08333em;"></span><span class="base textstyle uncramped"><span class="mord mathit">a</span><span class="mbin">+</span><span class="mord mathit">b</span></span></span></span> and output the sum in standard format -- that is, the digits must be separated into groups of three by commas (unless there are less than four digits).</p>
<h3 id="input-specification-">Input Specification:</h3>
<p>Each input file contains one test case. Each case contains a pair of integers <span class="katex"><span class="katex-mathml"><math><mrow><mi>a</mi></mrow>a</math></span><span aria-hidden="true" class="katex-html"><span class="strut" style="height:0.43056em;"></span><span class="strut bottom" style="height:0.43056em;vertical-align:0em;"></span><span class="base textstyle uncramped"><span class="mord mathit">a</span></span></span></span> and <span class="katex"><span class="katex-mathml"><math><mrow><mi>b</mi></mrow>b</math></span><span aria-hidden="true" class="katex-html"><span class="strut" style="height:0.69444em;"></span><span class="strut bottom" style="height:0.69444em;vertical-align:0em;"></span><span class="base textstyle uncramped"><span class="mord mathit">b</span></span></span></span> where <span class="katex"><span class="katex-mathml"><math><mrow><mo>−</mo><mn>1</mn><msup><mn>0</mn><mn>6</mn></msup><mo>≤</mo><mi>a</mi><mo separator="true">,</mo><mi>b</mi><mo>≤</mo><mn>1</mn><msup><mn>0</mn><mn>6</mn></msup></mrow>-10^6 \le a, b \le 10^6</math></span><span aria-hidden="true" class="katex-html"><span class="strut" style="height:0.8141079999999999em;"></span><span class="strut bottom" style="height:1.008548em;vertical-align:-0.19444em;"></span><span class="base textstyle uncramped"><span class="mord">−</span><span class="mord mathrm">1</span><span class="mord"><span class="mord mathrm">0</span><span class="msupsub"><span class="vlist"><span style="top:-0.363em;margin-right:0.05em;"><span class="fontsize-ensurer reset-size5 size5"><span style="font-size:0em;">​</span></span><span class="reset-textstyle scriptstyle uncramped mtight"><span class="mord mathrm mtight">6</span></span></span><span class="baseline-fix"><span class="fontsize-ensurer reset-size5 size5"><span style="font-size:0em;">​</span></span>​</span></span></span></span><span class="mrel">≤</span><span class="mord mathit">a</span><span class="mpunct">,</span><span class="mord mathit">b</span><span class="mrel">≤</span><span class="mord mathrm">1</span><span class="mord"><span class="mord mathrm">0</span><span class="msupsub"><span class="vlist"><span style="top:-0.363em;margin-right:0.05em;"><span class="fontsize-ensurer reset-size5 size5"><span style="font-size:0em;">​</span></span><span class="reset-textstyle scriptstyle uncramped mtight"><span class="mord mathrm mtight">6</span></span></span><span class="baseline-fix"><span class="fontsize-ensurer reset-size5 size5"><span style="font-size:0em;">​</span></span>​</span></span></span></span></span></span></span>. The numbers are separated by a space.</p>
<h3 id="output-specification-">Output Specification:</h3>
<p>For each test case, you should output the sum of <span class="katex"><span class="katex-mathml"><math><mrow><mi>a</mi></mrow>a</math></span><span aria-hidden="true" class="katex-html"><span class="strut" style="height:0.43056em;"></span><span class="strut bottom" style="height:0.43056em;vertical-align:0em;"></span><span class="base textstyle uncramped"><span class="mord mathit">a</span></span></span></span> and <span class="katex"><span class="katex-mathml"><math><mrow><mi>b</mi></mrow>b</math></span><span aria-hidden="true" class="katex-html"><span class="strut" style="height:0.69444em;"></span><span class="strut bottom" style="height:0.69444em;vertical-align:0em;"></span><span class="base textstyle uncramped"><span class="mord mathit">b</span></span></span></span> in one line. The sum must be written in the standard format.</p>
<h3 id="sample-input-">Sample Input:</h3>
<pre><code class="lang-in">-1000000 9
</code></pre>
<h3 id="sample-output-">Sample Output:</h3>
<pre><code class="lang-out">-999,991
</code></pre>
</div>
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