The cows, who always have an inferiority complex about their intelligence, have a new guessing game to sharpen their brains.A designated 'Hay Cow' hides behind the barn and creates N (1 ≤ N ≤ 1,000,000) uniquely-sized stacks (conveniently numbered 1.…

pre 首先注意一下翻译里面并没有提到的一点,也是让我没看懂样例的一点,就是这个长度为 \(n\) 的数组里面的数各不相同. 有很多人用并查集写的这道题,题解里面也有一些用线段树写的,不过我认为我的做法和各位线段树大佬的有些许不同. solution 同样,单调性和二分查找这里不再赘述,直接说给定 \(n\) 个条件,判断他们是否合法. 根据样例我们可以看出,对于同一个数 \(num\) ,如果给定了多个形如 \([l_i,r_i]->num\) 的条件,是可以缩小这个数的范围的. 通俗的说,我…

[USACO08JAN]haybale猜测Haybale Guessing 题目描述 给一段长度为\(n\),每个位置上的数都不同的序列\(a[1\dots n]\)和\(q\)和问答,每个问答是\((x, y, r)\)代表\(\min_\limits{i=a}^ba_i= r\), 要你给出最早的有矛盾的那个问答的编号. 输入输出格式 输入格式: Line 1: Two space-separated integers: \(N\) and \(Q\) Lines 2..\(Q+1\): E…

Haybale Guessing Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 2384   Accepted: 645 Description The cows, who always have an inferiority complex about their intelligence, have a new guessing game to sharpen their brains. A designated '…

Haybale Guessing Time Limit: 1000MS   Memory Limit: 65536K       Description The cows, who always have an inferiority complex about their intelligence, have a new guessing game to sharpen their brains. A designated 'Hay Cow' hides behind the barn and…

题目描述 The cows, who always have an inferiority complex about their intelligence, have a new guessing game to sharpen their brains. A designated 'Hay Cow' hides behind the barn and creates N (1 ≤ N ≤ 1,000,000) uniquely-sized stacks (conveniently numbe…

抄题解.jpg 完全完全不会啊,这道题简直太神了 不过抄题解可真开心 首先这道题目保证了每一个位置上的数都是不同的,那么就能得到第一种判断不合法的方式 如果两个区间的最小值一样,但是两个区间的交集为空集,那么就是不合法的 因为最小值肯定来自于同一个位置 之后就是第二种情况 上面那两个红色区间的最小值是\(4\),但是下面那个被完全包含的绿色区间的最小值是\(3\)这显然非常不合法 但是如果是这个样子呢 显然是可以的,因为那些\(3\)可以来自红色区间以外的位置 就有不行了,因为这个时候\(3\)…

Description The cows, who always have an inferiority complex about their intelligence, have a new guessing game to sharpen their brains. A designated 'Hay Cow' hides behind the barn and creates N (1 ≤ N ≤ 1,000,000) uniquely-sized stacks (convenientl…

http://poj.org/problem?id=3657 下方有中文版,不想看英文的可直接点这里看中文版题目 Description The cows, who always have an inferiority complex about their intelligence, have a new guessing game to sharpen their brains. A designated 'Hay Cow' hides behind the barn and creates…

题意:有N个大小各不相同的点,给定Q个询问,格式为q1,q2,A,表示区间q1~q2的最小值是A,问第一个与之前询问结果出现冲突的询问. 分析: 1.二分询问的标号mid,查询1~mid是否出现询问冲突. 2.用并查集判断是否冲突. 3.已知若一区间的最小值是A,A>B,那么若这个区间的某一子区间为B,那么一定是矛盾的. 4.因此将前mid个询问按A从大到小排序,先染色区间里A值较大的区间,若A值较小的区间完全在已染色的区间内,则一定矛盾. 5.此外,由于N值各不相同,所以不可能出现两个彼此无交…