static int findNumber ( int arr [ ] , int n ) {
  Arrays . sort ( arr ) ;
  int max = arr [ n - 1 ] ;
  int table [ ] = new int [ ( 2 * max ) + 1 ] ;
  table [ 0 ] = 0 ;
  for ( int i = 1 ;
  i < ( 2 * max ) + 1 ;
  i ++ ) table [ i ] = Integer . MAX_VALUE ;
  int ans = - 1 ;
  for ( int i = 1 ;
  i < ( 2 * max ) + 1 ;
  i ++ ) {
    for ( int j = 0 ;
    j < n ;
    j ++ ) {
      if ( arr [ j ] <= i ) {
        int res = table [ i - arr [ j ] ] ;
        if ( res != Integer . MAX_VALUE && res + 1 < table [ i ] ) table [ i ] = res + 1 ;
      }
    }
    if ( i > arr [ n - 1 ] && table [ i ] == Integer . MAX_VALUE ) {
      ans = i ;
      break ;
    }
  }
  return ans ;
}

static int findNumber ( int arr [ ] , int n ) { Arrays . sort ( arr ) ; int max = arr [ n - 1 ] ; int table [ ] = new int [ ( 2 * max ) + 1 ] ; table [ 0 ] = 0 ; for ( int i = 1 ; i < ( 2 * max ) + 1 ; i ++ ) table [ i ] = Integer . MAX_VALUE ; int ans = - 1 ; for ( int i = 1 ; i < ( 2 * max ) + 1 ; i ++ ) { for ( int j = 0 ; j < n ; j ++ ) { if ( arr [ j ] <= i ) { int res = table [ i - arr [ j ] ] ; if ( res != Integer . MAX_VALUE && res + 1 < table [ i ] ) table [ i ] = res + 1 ; } } if ( i > arr [ n - 1 ] && table [ i ] == Integer . MAX_VALUE ) { ans = i ; break ; } } return ans ; }
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