title: Pizza Cut Problem Circle Division Lines
signature: func pizzaCutProblemCircleDivisionLines(n int) int {
test_code: package main
  
  import (
      "fmt"
      "reflect"
      "math"
      "sort"
  )
  
  // SOLUTION CODE
  // ===================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE
  // ===================================
  func validateSolution(actual int, expected int) bool {
      return reflect.DeepEqual(actual,expected)
  }
  
  func driver(n int, expected int) 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(46, 1082)
      fmt.Printf("TEST-0...%s\n", result)
      
      result = driver(68, 2347)
      fmt.Printf("TEST-1...%s\n", result)
      
      result = driver(4, 11)
      fmt.Printf("TEST-2...%s\n", result)
      
      result = driver(12, 79)
      fmt.Printf("TEST-3...%s\n", result)
      
      result = driver(56, 1597)
      fmt.Printf("TEST-4...%s\n", result)
      
      result = driver(14, 106)
      fmt.Printf("TEST-5...%s\n", result)
      
      result = driver(81, 3322)
      fmt.Printf("TEST-6...%s\n", result)
      
      result = driver(29, 436)
      fmt.Printf("TEST-7...%s\n", result)
      
      result = driver(26, 352)
      fmt.Printf("TEST-8...%s\n", result)
      
      result = driver(40, 821)
      fmt.Printf("TEST-9...%s\n", result)
      
          
  }
source_py: def pizza_cut_problem_circle_division_lines(n):
      return int((1 + ((n * (n + 1)) / 2)))
source_cpp: int pizza_cut_problem_circle_division_lines(int n) {
    return 1 + n * ( n + 1 ) / 2;
  }