insert code to amp template

/* add code to amp Head tag */
function add_amp_custom_head_code() {
    ?>
    insert your code here

    <?php
}
add_action( 'amp_post_template_head', 'add_amp_custom_head_code' );




/* add code to amp Body tag before header */
function add_amp_custom_body() {
    ?>
        insert your code here

    <?php
}
add_action( 'jnews_amp_before_header', 'add_amp_custom_body' );



/* add code to amp Body tag before article */
function add_amp_custom_before_article() {
    ?>
        insert your code here

    <?php
}
add_action( 'jnews_amp_before_article', 'add_amp_custom_before_article' );