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")
