from itertools import product


def can_reach(src, dst):
    src_x, src_y = src
    dst_x, dst_y = dst

    for cx, cy in product((-1, 0, 1), repeat=2):
        if cx == cy == 0:
            continue
        if cx * src_x + cy * src_y == cx * dst_x + cy * dst_y:
            return True

    return False


N = int(input())
h, w = [int(s) for s in input().split()]

print("Yes" if can_reach((1, 1), (h, w)) else "No")