Python Hard
```python3 []
class Solution:
    def isGoodArray(self, nums: List[int]) -> bool:
        if 1 in nums:
            return True

        
        N = len(nums)

        x = nums[0]

        for y in nums:
            x = math.gcd(x, y)
            if x == 1:
                return True

        return False

```
['Python3']