摘要:
Write a program that finds and displays all pairs of 5-digit numbers that between them use the digits 0 through 9 once each, such that the first numbe 阅读全文
摘要:
朴素的DP线段覆盖 原题:http://codevs.cn/problem/1214/ 1214 线段覆盖 题目描述 Description 给定x轴上的N(0<N<100)条线段,每个线段由它的二个端点a_I和b_I确定,I=1,2,……N.这些坐标都是区间(-999,999)的整数。有些线段之间 阅读全文