S,T,c = input().split()  #3個の文字列の入力を受け取る

YoN = 'NO'

if c == "<" and int(S) < int(T):
    YoN = "Yes"

elif c == ">" and int(S) > int(T):
    YoN = "Yes"

elif c == "=" and int(S) == int(T):
    YoN = "Yes"

print(YoN)