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Source: Internet
Author: User

Link: Https://www.nowcoder.com/acm/contest/89/A

Source: Niu Ke Net

Time limit: c/s + + 1 seconds, other languages 2 seconds

Space restrictions: C/C + + 262144K, other languages 524288K

64bit IO Format:%lld

Topic description

The great Wall Story of Meng Jiangnv ' s bitter weeping happened during the Qin dynasty (221BC-206BC). Meng JIANGNV is a beauty in the Qin dynasty, and she lived happily with her husband. At this time, Emperor Qin Shihuang (the ' Emperor of Qin ') announced to build the great Wall. And the officials suddenly broke in their happy life and took Meng ' s husband away to build the wall. Because of the missing for her husband, she decided to set out to look for her husband. After a long journey, finally she reached the foot's the great Wall at the present Shanhaiguan. Upon her arrival, a bad news came to her, however, her husband, had already died of exhaustion and is buried into the Grea T wall! Meng could not help crying. She sat on the ground and cried and cried. Suddenly with a tremendous noise, a-Kilometer-long (248-mile-long) section of the wall collapsed over her bitter.

Today, Qin Shihuang gets N stones. The height of the ith stone is Ai. He'll use all of these stones to rebuild the great Wall. The great Wall more sturdy, the Prime Minister Li Si proposes a formula to calculate the "weakness" of th E reconstructed great Wall

The Bi is the height of the ith stone in the reconstructed great Wall, and the K are provided by Li Si.

For example, Qin Shihuang gets 5 stones. The height of these stones are [5,3,2,4,1], and the K is 2. There are different ways to rebuild the great Wall. The following figures show the two solutions:

The weakness of left figure and right figure are 4 and respectively.

Now, Li Si wants to know the minimum value of "weakness". Li Si is too old to calculate the answer quickly.

Enter a description:

The contains an integer T, where T is the number of test cases. T test Cases follow.

For the contains two integers n and K, where n are the number of stones and K is a variable whic H provided by Li Si.

The second line contains N integers A1, A2, ..., a, where Ai is the height of the ith stone that Qinshihuang gets.

1≤t≤50.

1≤n≤103.

1≤k≤n.

1≤ai≤104.

Output Description:

For each test case, print one line containing ' case #x: Y ', where x is the ' Test Case Number ' (starting from 1) and Y is the Minimum value of "weakness".

Example 1

Input

2

5 2

1 2 3 4 5

5 3

1 3 2 2 7

Output

Case #1:4

Case #2:7

Note:

For the "The" best ways is [1,2,3,4,5], weakness = (2−1) + (3−2) + (4−3) + (5−4) = 4.

For the "second case", one of the best ways is [7,3,2,2,1], weakness = (7−2) + (3−2) + (2−1) = 7.

Analysis: Arrange a sequence, iterate over it.

#include <iostream> #include <cstring> #include <cstdio> #include <algorithm> #include <cmath> #include <map> #include <vector> using namespace std; const int MAXN=1E5+10; #define LL long int int A[MAXN]; int main () { int T; scanf ("%d", &t); int cs=0; while (t--) { int m,n;cs++; scanf ("%d%d", &m,&n); for (int i=1;i<=m;i++) { scanf ("%d", &a[i]); Sort (a+1,a+1+m); ll ans=0; for (int i=n;i<=m;i++) { ans+=a[i]; ANS-=A[I-N+1]; } printf ("Case #%d:", CS); printf ("%lld\n", ans); } return 0; }

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