#include <iostream>
using namespace std;

int main() {
    int m, n;
    cin >> m >> n;

    int f[1003];
    f[1] = 1;

    for (int i = 2; i <= n; i++) {
        f[i] = 1; // 初始化为1，因为每个数字至少能分解成本身
        for (int j = 1; j <= i / 2; j++) {
            f[i] += f[j];
        }
    }

    cout << f[n] << endl;

    return 0;
}