题解 | 二叉树的形态树卡特兰数
二叉树的形态树
https://www.nowcoder.com/practice/f340858b5fa349fe81c0af305f9f44ea
n=int(input()) ans=1 for i in range(1,n+1):ans=ans*(2*n-i+1)//i print(ans//(n+1))
二叉树的形态树
https://www.nowcoder.com/practice/f340858b5fa349fe81c0af305f9f44ea
n=int(input()) ans=1 for i in range(1,n+1):ans=ans*(2*n-i+1)//i print(ans//(n+1))
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