title: How To Print Maximum Number Of A Using Given Four Keys
signature: func howToPrintMaximumNumberOfAUsingGivenFourKeys(n int) int64 {
test_code: package main
  
  import (
      "fmt"
      "reflect"
      "math"
      "sort"
  )
  
  // SOLUTION CODE
  // ===================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE
  // ===================================
  func validateSolution(actual int64, expected int64) bool {
      return reflect.DeepEqual(actual,expected)
  }
  
  func driver(n int, expected int64) string {
      if validateSolution(PLACEHOLDER_FN_NAME(n),expected) {
              return "PASSED"
      }
      return "FAILED"
  
  }
  
  func main() {
  
      // Use imports to avoid undefined errors
      var _ = reflect.DeepEqual
      _ = math.Abs
      _ = sort.Sort
      result := ""
      result = driver(41, 110592)
      fmt.Printf("TEST-0...%s\n", result)
      
      result = driver(94, 274877906944)
      fmt.Printf("TEST-1...%s\n", result)
      
      result = driver(80, 5435817984)
      fmt.Printf("TEST-2...%s\n", result)
      
      result = driver(40, 82944)
      fmt.Printf("TEST-3...%s\n", result)
      
      result = driver(76, 1811939328)
      fmt.Printf("TEST-4...%s\n", result)
      
      result = driver(5, 5)
      fmt.Printf("TEST-5...%s\n", result)
      
      result = driver(43, 196608)
      fmt.Printf("TEST-6...%s\n", result)
      
      result = driver(67, 150994944)
      fmt.Printf("TEST-7...%s\n", result)
      
      result = driver(24, 1024)
      fmt.Printf("TEST-8...%s\n", result)
      
      result = driver(90, 86973087744)
      fmt.Printf("TEST-9...%s\n", result)
      
          
  }
source_py: def how_to_print_maximum_number_of_a_using_given_four_keys(N):
      if (N <= 6):
          return N
      screen = ([0] * N)
      for n in range(1, 7):
          screen[(n - 1)] = n
      for n in range(7, (N + 1)):
          screen[(n - 1)] = max((2 * screen[(n - 4)]), max((3 * screen[(n - 5)]), (4 * screen[(n - 6)])))
      return screen[(N - 1)]
source_cpp: int how_to_print_maximum_number_of_a_using_given_four_keys(int N) {
    if ( N <= 6 ) return N;
    int screen [ N ];
    int b;
    int n;
    for ( n = 1;
    n <= 6;
    n ++ ) screen [ n - 1 ] = n;
    for ( n = 7;
    n <= N;
    n ++ ) {
      screen [ n - 1 ] = max ( 2 * screen [ n - 4 ], max ( 3 * screen [ n - 5 ], 4 * screen [ n - 6 ] ) );
    }
    return screen [ N - 1 ];
  }