From 1, 2, 3.100, take two numbers each time and add them together to get a sum. Among all the sums obtained in this way, are there more odd numbers or even numbers? How many more?
从1，2，3.100中，每次取出两个数相加得到一个和，请问这样得到的所有和中，奇数多还是偶数多？多多少个？
<gadget id="calculator">50 * 50</gadget>
<output>2_500</output>

<gadget id="calculator">2_500 + 2_500</gadget>
<output>5_000</output>

<gadget id="calculator">50 * 49</gadget>
<output>2_450</output>

<gadget id="calculator">2_450 + 2_450</gadget>
<output>4_900</output>

<gadget id="calculator">5_000 - 4_900</gadget>
<output>100</output>

<result>100</result>