六位数密码有多少组合

简介：Tian Shouxin smiled faintly: "The army is short of food and grass for Taiwan. I am afraid that two months of military rations will not be able to cope with the war in Kaifeng. However, Kaifeng is critical and we are not allowed to stay in Runing to continue raising food and grass. As the governor of Baoding and the pillar of the country, you will be the leader of Taiwan." Is there any good idea?