s,t,c = map(str,input().split())
if c == '<':
    if int(s) < int(t):
        print("YES")
    else:
        print("NO")
if c == '>':
    if int(s) > int(t):
        print("YES")
    else:
        print("NO") 
if c == '=':
    if int(s) == int(t):
        print("YES")
    else:
        print("NO")