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  1. import java.util.*;
  2. public class Main {
  3.   public static void main(String args[]) {
  4.     Scanner scanner = new Scanner(System.in);
  5.     int n = scanner.nextInt();
  6.  
  7.     int[] a = new int[n];
  8.  
  9.     for(int i=0;i<n;i++){
  10.         a[i] = scanner.nextInt();
  11.     }
  12.     int k = scanner.nextInt();
  13.     int max_len = Integer.MIN_VALUE;
  14.     int min_len = Integer.MAX_VALUE;
  15.  
  16.     int[] p = new int[n];
  17.     p[0] = a[0];
  18.  
  19.     for(int i =1;i<n;i++){
  20.         p[i] = p[i-1] +a[i];
  21.     }
  22.  
  23.     HashMap<Integer,Integer> map = new HashMap<>(), map2 = new HashMap<>();
  24.     map.put(0,-1);
  25.     map2.put(0,-1);
  26.     int length = 0;
  27.     for(int j=0;j<n;j++){
  28.         int rhs = p[j] - k;
  29.         int i =0;
  30.         if(map.containsKey(rhs) == true){
  31.             i = map.get(rhs)  +1;
  32.             length = j-i+1;
  33.             min_len = Math.min(min_len,length);
  34.         }
  35.         map.put(p[j],j);
  36.  
  37.         if(map2.containsKey(rhs) == true){
  38.             i = map2.get(rhs) + 1;
  39.             length = j -i +1;
  40.             max_len = Math.max(length,max_len);
  41.         }
  42.  
  43.         if(map2.containsKey(p[j] ) == false){
  44.             map2.put(p[j], j);
  45.         }
  46.  
  47.  
  48.     }
  49.  
  50.      if(max_len == Integer.MIN_VALUE){
  51.             System.out.println("-1,-1");
  52.         } else{
  53.             System.out.println(max_len +" " + min_len);
  54.         }
  55.  
  56.     scanner.close();
  57.   }
  58. }
Success #stdin #stdout 0.16s 60836KB
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https://ideone.com/1QeAjC
language:
Java (HotSpot 12)
created:
17 hours ago
visibility:
public

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