mod = 998244353


def main():
    import sys
    input = sys.stdin.readline

    N = input().rstrip('\n')

    x = N.count("1")
    if x == 1:
        print("No")
    elif x == 2:
        print("Yes")
    else:
        flg = 0
        for n in N:
            if n == "0":
                if flg == 0:
                    flg = 1
            else:
                if flg == 1:
                    print("No")
                    exit()
        print("Yes")


if __name__ == '__main__':
    main()