class Solution:
    def judgeCircle(self, moves: str) -> bool:
        location = [0, 0]
        for m in moves:
            if m == ‘L‘:
                location[0] -= 1
            elif m == ‘R‘:
                location[0] += 1
            elif m == ‘U‘:
                location[1] += 1
 

            else:
                location[1] -= 1
        return location[0] == 0 and location[1] == 0

Leetcode 657. Robot Return to Origin