http://poj.org/problem?id=3399 import java.util.*; import java.math.*; public class Main { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Scanner in=new Scanner(System.in); int n=in.nextInt(); int k=in.nextInt(); int k1=0,k2=0,a=0,kk=0; int[] a1=new int[101],a2=new int[101],ans=new int[101]; for(int i=0;i< n;++i){ a=in.nextInt(); if(a>=0) a1[k1++]=a; else a2[k2++]=a; } Arrays.sort(a1,0,k1); Arrays.sort(a2,0,k2); if(k%2==1){ k--; if(k1>0) ans[kk++]=a1[--k1]; else{ for(int i=k2-1;i>k2-1-k;--i) System.out.print(a2[i]+" "); System.out.println(a2[k2-1-k]); return ; } } int j2=0; for(int i=0;i< k/2;++i){ int t1=-1000000000; int t2=-1000000000; if(k1==1&&k2-j2==1){ ans[kk++]=a1[--k1]; ans[kk++]=a2[j2++]; }else{ if(k1>1) t1=a1[k1-1]*a1[k1-2]; if(k2-j2>1) t2=a2[j2]*a2[j2+1]; if(t1>t2){ ans[kk++]=a1[--k1]; ans[kk++]=a1[--k1]; }else{ ans[kk++]=a2[j2++]; ans[kk++]=a2[j2++]; } } } Arrays.sort(ans,0,kk); for(int i=kk-1;i>0;--i) System.out.print(ans[i]+" "); System.out.println(ans[0]); } }
Meta
-
Recent Posts
Recent Comments
- MorrissUnime on 隆宪叁年-五一
- bngvhmxrsj on 隆宪叁年-五一
- bngvjbansj on 隆宪叁年-五一
- bngvgffiij on 隆宪叁年-五一
- MorrissUnime on 隆宪叁年-五一
Archives
- May 2024
- April 2023
- February 2023
- January 2023
- December 2022
- November 2022
- September 2022
- June 2022
- July 2021
- January 2021
- February 2020
- September 2019
- March 2018
- February 2018
- August 2016
- July 2016
- June 2016
- May 2016
- April 2016
- March 2016
- February 2016
- January 2016
- December 2015
- November 2015
- October 2015
- September 2015
- August 2015
- July 2015
- June 2015
- May 2015
- April 2015
- March 2015
- February 2015
- January 2015
- December 2014
- November 2014
- October 2014
- September 2014
- August 2014
- July 2014
- June 2014
- May 2014
- April 2014
- March 2014
- February 2014
- January 2014
- December 2013
- November 2013
- October 2013
- September 2013
- August 2013
- July 2013
- June 2013
- May 2013
- April 2013
- March 2013
- February 2013
- January 2013
- December 2012
- November 2012
- October 2012
- September 2012
- August 2012
- July 2012
- June 2012
- May 2012
- April 2012
- March 2012
- February 2012
- January 2012
- December 2011
- November 2011
- October 2011
- September 2011
- August 2011
- July 2011
- June 2011
- May 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- October 2010
- September 2010
- August 2010
- July 2010
- June 2010
- May 2010
- April 2010
- March 2010
- February 2010
- January 2010
- December 2009
- November 2009
- October 2009
- September 2009
- August 2009
- July 2009
- June 2009
- May 2009
- April 2009
- March 2009
- February 2009
Categories