和值09的组合数

简介：At dusk, Zhang Xianzhong's army of bandits camped in a wilderness 140 miles away from Xingguo Prefecture. They camped at dusk and set off at midnight (12 o'clock in the night). This is the consistent characteristic of Xianying's march. Today's march After traveling fifty miles, we will travel another fifty miles tomorrow, and we will arrive at Xingguo Prefecture in the early morning three days later.