题解（递推）

#include<stdio.h>
#define int long long

signed main(){
    int kind[100]={0,1,2,3,4,5,6,7,8,9,10};
    for (int i=11;i<=24;i++){
        kind[i]=kind[i-10]*kind[i-1];
    }
    int n;
    scanf("%lld",&n);
    printf("%lld",kind[n]);
    return 0;
}