Use the ten numbers 0, 1, 2, ..., 9 to form five two-digit numbers, use each number only once, and require their sum to be an odd number and as large as possible, then the sum of these five two-digit numbers how many.
用0，1，2，…，9这十个数字组成五个两位数，每个数字只用一次，要求它们的和是奇数，并且尽可能地大，那么这五个两位数的和是多少．
<gadget id="calculator">90 + 81 + 72 + 63 + 45</gadget>
<output>351</output>

<result>351</result>