<?php
$array = explode(' ', trim(fgets(STDIN)));
$a = $array[0];
$b = $array[1];

if (abs(preg_replace("/0{2,}$/",'',$a)) < 10 && abs(preg_replace("/0{2,}$/",'',$b)) < 10) {
    $result = ($a*$b)/10;
} else {
    $result = $a*$b;
    if (abs($result) > 99999999) {
        $result = "E";
        
    }
}

echo $result;
?>