11 lines
264 B
C++
11 lines
264 B
C++
// 129
|
|
#include <bits/stdc++.h>
|
|
using namespace std;
|
|
int ans[19] = {0, 1, 2, 5, 14, 42, 132, 429, 1430, 4862, 16796, 58786, 208012, 742900, 2674440, 9694845, 35357670, 129644790, 477638700};
|
|
int main()
|
|
{
|
|
int n;
|
|
cin >> n;
|
|
cout << ans[n];
|
|
return 0;
|
|
} |