You want to water n plants in your garden with a watering can. The plants are arranged in a row and are labeled from 0 to n - 1 from left to right where the ith plant is located at x = i. There is a river at x = -1 that you can refill your watering can at.
Each plant needs a specific amount of water. You will water the plants in the following way:
\n\nYou are initially at the river (i.e., x = -1). It takes one step to move one unit on the x-axis.
Given a 0-indexed integer array plants of n integers, where plants[i] is the amount of water the ith plant needs, and an integer capacity representing the watering can capacity, return the number of steps needed to water all the plants.
\n
Example 1:
\n\n\nInput: plants = [2,2,3,3], capacity = 5\nOutput: 14\nExplanation: Start at the river with a full watering can:\n- Walk to plant 0 (1 step) and water it. Watering can has 3 units of water.\n- Walk to plant 1 (1 step) and water it. Watering can has 1 unit of water.\n- Since you cannot completely water plant 2, walk back to the river to refill (2 steps).\n- Walk to plant 2 (3 steps) and water it. Watering can has 2 units of water.\n- Since you cannot completely water plant 3, walk back to the river to refill (3 steps).\n- Walk to plant 3 (4 steps) and water it.\nSteps needed = 1 + 1 + 2 + 3 + 3 + 4 = 14.\n\n\n
Example 2:
\n\n\nInput: plants = [1,1,1,4,2,3], capacity = 4\nOutput: 30\nExplanation: Start at the river with a full watering can:\n- Water plants 0, 1, and 2 (3 steps). Return to river (3 steps).\n- Water plant 3 (4 steps). Return to river (4 steps).\n- Water plant 4 (5 steps). Return to river (5 steps).\n- Water plant 5 (6 steps).\nSteps needed = 3 + 3 + 4 + 4 + 5 + 5 + 6 = 30.\n\n\n
Example 3:
\n\n\nInput: plants = [7,7,7,7,7,7,7], capacity = 8\nOutput: 49\nExplanation: You have to refill before watering each plant.\nSteps needed = 1 + 1 + 2 + 2 + 3 + 3 + 4 + 4 + 5 + 5 + 6 + 6 + 7 = 49.\n\n\n
\n
Constraints:
\n\nn == plants.length1 <= n <= 10001 <= plants[i] <= 106max(plants[i]) <= capacity <= 109你打算用一个水罐给花园里的 n 株植物浇水。植物排成一行，从左到右进行标记，编号从 0 到 n - 1 。其中，第 i 株植物的位置是 x = i 。x = -1 处有一条河，你可以在那里重新灌满你的水罐。
每一株植物都需要浇特定量的水。你将会按下面描述的方式完成浇水：
\n\n最初，你在河边（也就是，x = -1），在 x 轴上每移动 一个单位 都需要 一步 。
给你一个下标从 0 开始的整数数组 plants ，数组由 n 个整数组成。其中，plants[i] 为第 i 株植物需要的水量。另有一个整数 capacity 表示水罐的容量，返回浇灌所有植物需要的 步数 。
\n\n
示例 1：
\n\n\n输入：plants = [2,2,3,3], capacity = 5\n输出：14\n解释：从河边开始，此时水罐是装满的：\n- 走到植物 0 (1 步) ，浇水。水罐中还有 3 单位的水。\n- 走到植物 1 (1 步) ，浇水。水罐中还有 1 单位的水。\n- 由于不能完全浇灌植物 2 ，回到河边取水 (2 步)。\n- 走到植物 2 (3 步) ，浇水。水罐中还有 2 单位的水。\n- 由于不能完全浇灌植物 3 ，回到河边取水 (3 步)。\n- 走到植物 3 (4 步) ，浇水。\n需要的步数是 = 1 + 1 + 2 + 3 + 3 + 4 = 14 。\n\n\n
示例 2：
\n\n\n输入：plants = [1,1,1,4,2,3], capacity = 4\n输出：30\n解释：从河边开始，此时水罐是装满的：\n- 走到植物 0，1，2 (3 步) ，浇水。回到河边取水 (3 步)。\n- 走到植物 3 (4 步) ，浇水。回到河边取水 (4 步)。\n- 走到植物 4 (5 步) ，浇水。回到河边取水 (5 步)。\n- 走到植物 5 (6 步) ，浇水。\n需要的步数是 = 3 + 3 + 4 + 4 + 5 + 5 + 6 = 30 。\n\n
示例 3：
\n\n\n输入：plants = [7,7,7,7,7,7,7], capacity = 8\n输出：49\n解释：每次浇水都需要重新灌满水罐。\n需要的步数是 = 1 + 1 + 2 + 2 + 3 + 3 + 4 + 4 + 5 + 5 + 6 + 6 + 7 = 49 。\n\n\n
\n\n
提示：
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