HDU 6197 array array array(最长不下降子序列)
2017-09-10 17:43
435 查看
array array array
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 0 Accepted Submission(s): 0
Problem Description
One day, Kaitou Kiddo had stolen a priceless diamond ring. But detective Conan blocked Kiddo's path to escape from the museum. But Kiddo didn't want to give it back. So, Kiddo asked Conan a question. If Conan could give a right answer, Kiddo would return the
ring to the museum.
Kiddo: "I have an array A and
a number k,
if you can choose exactly k elements
from A and
erase them, then the remaining array is in non-increasing order or non-decreasing order, we say A is
a magic array. Now I want you to tell me whether A is
a magic array. " Conan: "emmmmm..." Now, Conan seems to be in trouble, can you help him?
Input
The first line contains an integer T indicating the total number of test cases. Each test case starts with two integers n and k in
one line, then one line with n integers: A1,A2…An.
1≤T≤20
1≤n≤105
0≤k≤n
1≤Ai≤105
Output
For each test case, please output "A is a magic array." if it is a magic array. Otherwise, output "A is not a magic array." (without quotes).
Sample Input
3
4 1
1 4 3 7
5 2
4 1 3 1 2
6 1
1 4 3 5 4 6
Sample Output
A is a magic array.
A is a magic array.
A is not a magic array.
Source
2017 ACM/ICPC Asia Regional Shenyang Online
Recommend
liuyiding
题解:
这是比赛我做出的第一题。。比较简单,直接正着和反着求一遍最长不下降子序列,然后把总长减去序列长度和k比较一下就行了
然后一开始我tle了。。。后来改成nlogn的做法就ac了
代码没有了。。。hdu不允许提出来我的忘记存了
相关文章推荐
- HDU-6197 - array array array - 最长上升或下降子序列
- HDU 6197 array array array(最长上升或下降子序列)
- HDU 6197 array array array (2017沈阳网赛- 最长上升子序列)
- HDU 5532 Almost Sorted Array(最长不下降子序列nlogn模板)
- hdu 6197 array array array (LIS,最长上升子序列模板题)
- hdu 6197 贪心 最长单调递增子序列
- hdu1160(最长下降子序列+排序)
- hdu 1257 dp(最长下降子序列)
- hdu1160简单dp最长下降子序列
- hdu 5256 序列变换 求最少改变次数使序列变为递增 最长不下降子序列
- hdu1160简单dp最长下降子序列
- HDU1160 - FatMouse's Speed(最长下降子序列+打印路径)
- hdu 1069 monkey and banana(最长下降子序列)
- hdu 5532 Almost Sorted Array(最长上升(不下降)子序列和最长下降(不上升)子序列)
- [hdu 5532] [2015ACM/ICPC亚洲区长春站 ] Almost Sorted Array 最长不下降子序列
- hdu1069 最长下降子序列
- hdu1160 FatMouse's Speed 【最长下降子序列+输出】
- hdu 4604 Deque(最长不下降子序列)
- HDU 1069(最长下降子序列)
- hdu 1160 FatMouse's Speed(最长不下降子序列+输出路径)