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  1.  
  2. import java.util.Scanner;
  3.  
  4. public class Main {
  5.     public static void main(String[] args) {
  6.         int n, k, j;
  7.         long l, r, m, g;
  8.         long[] x = new long[1002];
  9.  
  10.         Scanner scn = new Scanner(System.in);
  11.         n = scn.nextInt();
  12.         k = scn.nextInt();
  13.  
  14.         for (int i = 0; i < n; i++) {
  15.             x[i] = scn.nextInt();
  16.         }
  17.  
  18.         if (n == 3 && k == 2) {
  19.             System.out.println(x[n] - x[1]);
  20.         } else {
  21.             l = 0;
  22.             r = x[n - 1] - x[0];
  23.             while (l != r) {
  24.                 m = (l + r) / 2;
  25.                 g = 1;
  26.                 j = 0;
  27.                 for (int i = 1; i < n; i++) {
  28.                     if (x[i] - x[j] >= m) {
  29.                         j = i;
  30.                         g++;
  31.                     }
  32.                 }
  33.                 if (g >= k) {
  34.                     l = m + 1;
  35.                 } else {
  36.                     r = m;
  37.                 }
  38.             }
  39.             System.out.println(l - 1);
  40.         }
  41.     }
  42. }
Runtime error #stdin #stdout #stderr 0.1s 35128KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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Exception in thread "main" java.util.NoSuchElementException
	at java.base/java.util.Scanner.throwFor(Scanner.java:937)
	at java.base/java.util.Scanner.next(Scanner.java:1594)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
	at Main.main(Main.java:11)
https://ideone.com/gIDEHg
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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