C1385 Tang Ao's Conjectures

"Yes, yes." After Xue Yuehong said this, Zhao Tao immediately nodded his head, and continued to speak: "After discovering the abnormality of this stream, we fought a bit, and after that, of the twenty people who went with us, only twelve remained. In the end, the twelve of us agreed to fetch water for each of us for two hours. After collecting water for one day