Submission #653505

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
653505	2022-10-27 04:19:41	ziduo	Feast (NOI19_feast)	Java	41 / 100	1096 ms	90184 KiB

feast

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import java.io.*;
import java.util.*;
public class feast {
  static int n;
  static int k;
  static long[][][] dp;
  static long[] A;
  public static void main(String[] args)throws IOException {
    // TODO Auto-generated method stub
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      BufferedWriter out = new BufferedWriter(new OutputStreamWriter(System.out));
      StringTokenizer st = new StringTokenizer(br.readLine());
      n = Integer.parseInt(st.nextToken());
      k = Integer.parseInt(st.nextToken());
      dp = new long[n+1][2][2];
      dp[0][1][0] = -1000000000000000000L;
      A = new long[n+1];
      st = new StringTokenizer(br.readLine());
      for(int i=1; i<=n; i++) 
        A[i] = Integer.parseInt(st.nextToken());
      long l = 0;
      long r = 1000000000000000L;
      while(l<r) {
        long m =(l+r)/2;
        if(solve(m))r = m;
        else l = m+1;
      }
      solve(l);
      out.write(better(dp[n][0],dp[n][1])[0]+l*k+"\n");
      out.flush();
 
 
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