题解

#include<iostream>
using namespace std;
int main(){
	int n,a[25]={0,0,0,0,0,0,0,0,0,0,0,0,0,1,2,8,9,6,9,29,39,38,65,88,128};
	cin>>n;
	cout<<a[n];
	return 0;
}

打表即可