摘要:
题目描述 Given l1,r1,l2,r2,l3,r3,l4,r4, please count the number of four-tuples (x1,x2,x3,x4) such that li≤ xi≤ ri and x1≠x2,x2≠x3,x3≠x4,x4≠x1. The answer 阅读全文
posted @ 2018-05-18 17:30
Flower_Z
阅读(174)
评论(0)
推荐(0)
浙公网安备 33010602011771号