def main():
    n = input()
    if (n1 := n.count('1')) == 1: print('No')
    elif n1 == 2: print('Yes')
    else: print('Yes' if (n0 := n.find('0')) > n.rfind('1') or n0 == -1 else 'No')

if __name__ == '__main__':
    main()