#include <fstream>
#include <iostream>

bool possible (const int, const int, const int);
void rec (const int, const int);

const int size = 15;
int arr[size][size] = {0}, Row, Column;

int main() {
    std::cin >> Row >> Column;
    if ((Row + Column) < 5) {
        std::cout << 0;
        return 0;
    }
    arr[0][0] = 1;
    rec (0, 0);
    std::cout << arr[Row - 1][Column - 1];
    return 0;
}

bool possible (const int course, const int cur_i, const int cur_j) {
    switch (course) {
        case 1:
            return ((cur_i > 0) && (cur_j < Column - 2));
            break;
        case 2:
            return ((cur_i < Row - 1) && (cur_j < Column - 2));
            break;
        case 3:
            return ((cur_i < Row - 2) && (cur_j < Column - 1));
            break;
        case 4:
            return ((cur_i < Row - 2) && (cur_j > 0));
            break;
        default:
            return 0;
    }
}

void rec (const int i, const int j) {
    if ((i == Row - 1) && (j == Column - 1))
        return;

    if (possible (1, i, j)) {
        arr[i - 1][j + 2] += arr[i][j];
        rec (i - 1, j + 2);
    }
    if (possible (2, i, j)) {
        arr[i + 1][j + 2] += arr[i][j];
        rec (i + 1, j + 2);
    }
    if (possible (3, i, j)) {
        arr[i + 2][j + 1] += arr[i][j];
        rec (i + 2, j + 1);
    }
    if (possible (4, i, j)) {
        arr[i + 2][j - 1] += arr[i][j];
        rec (i + 2, j - 1);
    }
    arr[i][j] = 0;

    return;
}