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  1. import java.util.*;
  2.  
  3. class Ideone {
  4.     public static void main(String[] args) {
  5.         Scanner sc = new Scanner(System.in);
  6.         int n = sc.nextInt();
  7.         int k = sc.nextInt();
  8.         int arr[] = new int[n];
  9.         for (int i = 0; i < n; i++) arr[i] = sc.nextInt();
  10.  
  11.         HashMap<Integer,Integer> first = new HashMap<>();
  12.         HashMap<Integer,Integer> last = new HashMap<>();
  13.         int sum = 0, maxLen = 0, minLen = Integer.MAX_VALUE;
  14.  
  15.         first.put(0,-1);
  16.         last.put(0,-1);
  17.  
  18.         for (int i = 0; i < n; i++) {
  19.             sum += arr[i];
  20.  
  21.             if (first.containsKey(sum - k)) {
  22.                 maxLen = Math.max(maxLen, i - first.get(sum - k));
  23.             }
  24.             if (last.containsKey(sum - k)) {
  25.                 minLen = Math.min(minLen, i - last.get(sum - k));
  26.             }
  27.  
  28.             if (!first.containsKey(sum)) first.put(sum,i);
  29.             last.put(sum,i);
  30.         }
  31.  
  32.         System.out.println(maxLen + " " + (minLen == Integer.MAX_VALUE ? 0 : minLen));
  33.     }
  34. }
Success #stdin #stdout 0.17s 58848KB
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https://ideone.com/iaue4M
language:
Java (HotSpot 12)
created:
1 day ago
visibility:
public

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