a, b, c = input().split()
a = int(a)
b = int(b)
ans = 'NO'
if c =='<':
    if a < b:
        ans = 'YES'
elif c == '>':
    if a > b:
        ans = 'YES'
else: # c == '=':
    if a == b:
        ans = 'YES'

print(ans)