S, T, c = (map(str,input().split()))
S = int(S)
T = int(T)

if c == "<":
    if S < T:
        print("YES")
    else:
        print("NO")
if c == ">":
    if S > T:
        print("YES")
    else:
        print("NO")
if c == "=":
    if S == T:
        print("YES")
    else:
        print("NO")