var numberOfPaths = function(matrix, i, j, size) {
    var count = 0;
    if (i == size - 1 && j == size - 1) {
        return matrix[i][j];
    }
    if (i == size - 1) {
        return matrix[i][j + 1]
    }
    if (j == size - 1) {
        return matrix[i + 1][j]
    }
    if (matrix[i][j] == 1) {
        return numberOfPaths(matrix, i + 1, j, size) + numberOfPaths(matrix, i, j + 1, size);
    }
    return 0;
}