#240 · #1658 · Minimum Operations to Reduce X to Zero(将 x 减到 0 的最小操作数)

You are given an array nums and an integer x. In one operation you may remove either the leftmost or the rightmost element and subtract it from x. Return the minimum number of operations to reduce x to exactly 0, or -1 if impossible. Constraints: 1 <= nums.length <= 10^5, 1 <= nums[i] <= 10^4, 1 <= x <= 10^9.