public static void main ( String args [ ] ) {
  int arr [ ] = {
    1 , 4 , 2 , 3 , 5 , 7 , 6 };
    int n = arr . length ;
    int k = 4 ;
    cal_prefix ( n , arr ) ;
    int queries [ ] [ ] = {
      {
        1 , n , 1 }, {
          2 , n - 2 , 2 }, {
            3 , n - 1 , 3 }
          };
          int q = queries . length ;
          for ( int i = 0 ;
          i < q ;
          i ++ ) System . out . println ( ksub ( queries [ i ] [ 0 ] , queries [ i ] [ 1 ] , n , queries [ i ] [ 2 ] ) ) ;
        }
        
public static void main ( String args [ ] ) { int arr [ ] = { 1 , 4 , 2 , 3 , 5 , 7 , 6 } ; int n = arr . length ; int k = 4 ; cal_prefix ( n , arr ) ; int queries [ ] [ ] = { { 1 , n , 1 } , { 2 , n - 2 , 2 } , { 3 , n - 1 , 3 } } ; int q = queries . length ; for ( int i = 0 ; i < q ; i ++ ) System . out . println ( ksub ( queries [ i ] [ 0 ] , queries [ i ] [ 1 ] , n , queries [ i ] [ 2 ] ) ) ; }
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