题目大意： 题目链接：https://jzoj.net/senior/#main/show/100044 题目图片： http://wx4.sinaimg.cn/mw690/0060lm7Tly1fy7h522lqej30j50dk3zl.jpg http://wx4.sinaimg.cn/mw690/0060lm7Tly1fy7h522g0rj30jv0h3glu.jpg http://wx1