You are installing a billboard and want it to have the largest height. The billboard will have two steel supports, one on each side. Each steel support must be an equal height.
\n\nYou are given a collection of rods that can be welded together. For example, if you have rods of lengths 1, 2, and 3, you can weld them together to make a support of length 6.
Return the largest possible height of your billboard installation. If you cannot support the billboard, return 0.
\n
Example 1:
\n\n\nInput: rods = [1,2,3,6]\nOutput: 6\nExplanation: We have two disjoint subsets {1,2,3} and {6}, which have the same sum = 6.\n\n\nExample 2:
\n\n\nInput: rods = [1,2,3,4,5,6]\nOutput: 10\nExplanation: We have two disjoint subsets {2,3,5} and {4,6}, which have the same sum = 10.\n\n\nExample 3:
\n\n\nInput: rods = [1,2]\nOutput: 0\nExplanation: The billboard cannot be supported, so we return 0.\n\n\n
\n
Constraints:
\n\n1 <= rods.length <= 201 <= rods[i] <= 1000sum(rods[i]) <= 5000你正在安装一个广告牌，并希望它高度最大。这块广告牌将有两个钢制支架，两边各一个。每个钢支架的高度必须相等。
\n\n你有一堆可以焊接在一起的钢筋 rods。举个例子，如果钢筋的长度为 1、2 和 3，则可以将它们焊接在一起形成长度为 6 的支架。
返回 广告牌的最大可能安装高度 。如果没法安装广告牌，请返回 0 。
\n\n
示例 1：
\n\n\n输入：[1,2,3,6]\n输出：6\n解释：我们有两个不相交的子集 {1,2,3} 和 {6}，它们具有相同的和 sum = 6。\n\n\n示例 2：
\n\n\n输入：[1,2,3,4,5,6]\n输出：10\n解释：我们有两个不相交的子集 {2,3,5} 和 {4,6}，它们具有相同的和 sum = 10。\n\n示例 3：
\n\n\n输入：[1,2]\n输出：0\n解释：没法安装广告牌，所以返回 0。\n\n
\n\n
提示：
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