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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7.     public static void main (String[] args) throws java.lang.Exception
  8.     {
  9.         int arr[] = {1, 3, 5, 7, 9, 11};
  10.  
  11.   int k1 = 8;
  12.     int k2 = 16;
  13.  
  14.     int n = arr.length;
  15.       int ans = 0;
  16.  
  17.         for(int j = 1; j < n - 2; j++)
  18.         {
  19.  
  20.             int i = 0;
  21.             int x = j ;
  22.             int count1 = 0;
  23.  
  24.             while(i < x)
  25.             {
  26.                 if(arr[i] + arr[x] > k1)
  27.                 {
  28.                     count1 += x - i;
  29.                     x--;
  30.                 }
  31.                 else
  32.                 {
  33.                     i++;
  34.                 }
  35.             }
  36.  
  37.             int k = j + 1;
  38.             int l = n - 1;
  39.             int count2 = 0;
  40.  
  41.       while(k < l)
  42.             {
  43.            if(arr[k] +arr[l] > k2)
  44.                 {
  45.                  count2 += l - k;
  46.                     l--;
  47.                 }
  48.                 else
  49.                 {
  50.                     k++;
  51.                 }
  52.             }
  53.  
  54.             ans +=count1 * count2;
  55.         }
  56.  
  57.         System.out.println(ans);
  58.     }
  59. }
Success #stdin #stdout 0.06s 52572KB
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https://ideone.com/Tmrwb5
language:
Java (HotSpot 12)
created:
22 hours ago
visibility:
public

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