Problems Description
<p class="p0"> 3 = 2+1 = 1+1+1 Total<span>三种拆法 </span> </p> <p class="p0"> 4 = 3 + 1 = 2 + 2 = 2 + 1 + 1 = 1 + 1 + 1 + 1 <span>Total五种拆法</span> </p> <p class="p0"> 5 = 4 + 1 = 3 + 2 = 3 + 1 + 1 = 2 + 2 + 1 = 2 + 1 + 1 + 1 = 1 + 1 +1 +1 +1 <span>Total七种拆法</span> </p> <p class="p0"> 依此类推,请问一items从键盘输入的<span>n</span><span>值(</span><span>2<n<100</span><span>)拆解方法有多少种?</span> </p>
Input格式
<p class="p0"> 1<span>items数</span><span>n</span><span>。表示要拆解的数字。</span> </p>
Output格式
<p class="p0"> 1<span>items数。表示拆解方法的items数。</span> </p>
Sample
Sample Input 1
10
Sample Output 1
42
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