Xiao Min went to the store to buy stationery. She bought a pencil with half of the money she brought, bought a ballpoint pen with the remaining half, and left 1 yuan. How much money did Xiao Min have?
小敏到商店买文具用品．她用所带钱的一半买了1支铅笔，剩下的一半买了1支圆珠笔，还剩下1元钱．小敏原来有多少钱？
<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>