题解 | #牛牛的金币#
牛牛的金币
https://www.nowcoder.com/practice/35d8e3e569dc49f2a1018d1dc9186998
x,y=map(int,input().split()) x1,y1=map(int,input().split()) if x==x1 and y1-y==1: print("u") elif x==x1 and y1-y==-1: print("d") elif y==y1 and x1-x==1: print("r") else: print("l")