<?php
define("EXP_MAX", 100000000);
define("RESULT_DIV_VALUE", 1000003);

list($x, $n) = explode(" ",trim(fgets(STDIN)));
$exp_member_array = explode(" ",trim(fgets(STDIN)));

$exp_sum_value = array();
$exp_sum_value[1] = intval($x);
$gmp_pow_temp = gmp_init($exp_sum_value[1]);
for ( $i=2; $i<=EXP_MAX; $i<<=1 ) {
	$gmp_pow_temp = gmp_mul($gmp_pow_temp, gmp_div_r($gmp_pow_temp, gmp_init(RESULT_DIV_VALUE)));
	$exp_sum_value[$i] = gmp_intval(gmp_div_r($gmp_pow_temp, gmp_init(RESULT_DIV_VALUE)));
}
$exp_sum_value_max_index = ($i>>1);
$sum = 0;
foreach ( $exp_member_array as &$exp ) {
	$i = $exp_sum_value_max_index;
	$gmp_sum_temp = gmp_init(1);
	while ( $exp > 0 ) {
		while ( $exp >= $i ) {
			$exp -= $i;
			$gmp_sum_temp = gmp_div_r(gmp_mul($gmp_sum_temp, $exp_sum_value[$i]), gmp_init(RESULT_DIV_VALUE));
		}
		$i >>= 1;
	}
	$sum += gmp_intval($gmp_sum_temp);
	$sum %= RESULT_DIV_VALUE;
}

echo $sum.PHP_EOL;