private static int unboundedKnapsack ( int W , int n , int [ ] val , int [ ] wt ) {
  int dp [ ] = new int [ W + 1 ] ;
  for ( int i = 0 ;
  i <= W ;
  i ++ ) {
    for ( int j = 0 ;
    j < n ;
    j ++ ) {
      if ( wt [ j ] <= i ) {
        dp [ i ] = max ( dp [ i ] , dp [ i - wt [ j ] ] + val [ j ] ) ;
      }
    }
  }
  return dp [ W ] ;
}

private static int unboundedKnapsack ( int W , int n , int [ ] val , int [ ] wt ) { int dp [ ] = new int [ W + 1 ] ; for ( int i = 0 ; i <= W ; i ++ ) { for ( int j = 0 ; j < n ; j ++ ) { if ( wt [ j ] <= i ) { dp [ i ] = max ( dp [ i ] , dp [ i - wt [ j ] ] + val [ j ] ) ; } } } return dp [ W ] ; }
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