狗尾巴有一年，某乡贯彻上级精神，下令要将各家各户的狗统统打死，要打得干净彻底不留后患。为了保证效果，要求每打死一条狗就把狗尾巴割下，各村有多少条狗就必须上交多少条狗尾巴。没几天，各个村的狗尾巴如数上交到乡打狗办。乡里打狗工作顺利完成，受到上级表彰。时... Dog tail year, a village to carry out the spirit of superiors, ordered all households to kill all the dogs, to play clean thoroughly without leaving trouble. In order to ensure the effect, the dog tail is required to be severed for every dog ​​killed. How many dog ​​tails must be handed over in each village? In a few days, the dog tail in each village was handed over to the township for dogs. Township dog work successfully completed, commended by superiors. Time...