S, T, c = input().split()
S, T = int(S, T)
F = 'no'

if (c == '<') and (S < T):
    F = 'Yes'
    
if (c == '>') and (S > T):
    F = 'Yes'

if (c == '=') and (S == T):
    F = 'Yes'
    
print(F)