Xiao Ming has 4 pieces of candy and eats at least one piece every day. How many different ways does Xiao Ming have to eat up the candy?
小明有4块糖，每天至少吃一块．小明把糖吃完有多少种不同的方法．
<gadget id="calculator">1 + 3 + 3 + 1</gadget>
<output>8</output>

<result>8</result>