def main():

    S, T ,c = input().split()
    #print(S)
    #print(T)
    #print(c)
    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')

if __name__ == '__main__':
    main()