## https://yukicoder.me/problems/no/758

MOD = 10 ** 9 + 7

def main():
    N = input()

    c = 0
    for i in range(len(N)):
        if N[i] == "1":
            c += 1
    if c == 2:
        print("Yes")
        return
    if c == 1:
        print("No")
        return
    
    x = N.split("0")
    x = [y for y in x if len(y) > 0]
    if len(x) == 1:
        print("Yes")
    else:
        print("No")











if __name__ == "__main__":
    main()