Use 1 cent, 2 cent and 5 cent coins to make up a dollar. How many different combinations are there?
用1分、2分和5分的硬币凑成一元．共有多少种不同的凑法？
<gadget id="calculator">49 * 10</gadget>
<output>490</output>

<gadget id="calculator">490 + 51</gadget>
<output>541</output>

<result>541</result>