you give integer array num integer k Append k unique positive integer appear num num result total sum minimumReturn sum k integer append num Example 1input num 14251025 k 2output 5explanation the unique positive integer appear num append 2 3the result sum num 1 4 25 10 25 2 3 70 minimumthe sum integer append 2 3 5 return 5example 2input num 56 k 6output 25explanation the unique positive integer appear num append 1 2 3 4 7 8the result sum num 5 6 1 2 3 4 7 8 36 minimum the sum integer append 1 2 3 4 7 8 25 return 25 Constraints1 numslength 1051 numsi 1091 k 108