s, t, c = input().split()
s = int(s)
t = int(t)
if c == "<":
    if s < t:
        print("YES")
    else:
        print("NO")
elif c == ">":
    if s > t:
        print("YES")
    else:
        print("NO")
elif c == "=":
    if s == t:
        print("YES")
    else:
        print("NO")