Easy Solution
IntuitionApproachComplexity
Time complexity:

Space complexity:
Code
# Intuition
<!-- Describe your first thoughts on how to solve this problem. -->

# Approach
<!-- Describe your approach to solving the problem. -->

# Complexity
- Time complexity:
<!-- Add your time complexity here, e.g. $$O(n)$$ -->

- Space complexity:
<!-- Add your space complexity here, e.g. $$O(n)$$ -->

# Code
```python3 []
class Solution:
    def findTheArrayConcVal(self, nums: List[int]) -> int:
        left,right=0,len(nums)-1
        tem=[]
        while left<=right:
            if left!=right:
                tem.append(int(str(nums[left])+str(nums[right])))
            elif left==right:
                tem.append(nums[left])
            left+=1
            right-=1
        return sum(tem)
        

        
```
['Python3']