title: Sum Series 12 32 52 2N 12 1
signature: pub fn sum_series_12_32_52_2n_12_1(n: i32) -> i32 {
test_code: use std::collections::HashMap;
  use std::collections::HashSet;
  use std::cmp::*;
  use std::collections::*;
  use std::fmt::*; 
  
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  pub fn validate_solution(actual: i32, expected: i32)->bool{
  return actual==expected
  }
  pub fn driver(n: i32, expected: i32)->String{
      if validate_solution(PLACEHOLDER_FN_NAME(n), expected) {
        return "PASSED".to_string();
      };
      return "FAILED".to_string();
  
  }
  
  fn main() {
      println!("TEST-0...{}", driver(
        84, 
        790244
      ));
      
      println!("TEST-1...{}", driver(
        74, 
        540274
      ));
      
      println!("TEST-2...{}", driver(
        91, 
        1004731
      ));
      
      println!("TEST-3...{}", driver(
        34, 
        52394
      ));
      
      println!("TEST-4...{}", driver(
        36, 
        62196
      ));
      
      println!("TEST-5...{}", driver(
        28, 
        29260
      ));
      
      println!("TEST-6...{}", driver(
        70, 
        457310
      ));
      
      println!("TEST-7...{}", driver(
        7, 
        455
      ));
      
      println!("TEST-8...{}", driver(
        24, 
        18424
      ));
      
      println!("TEST-9...{}", driver(
        47, 
        138415
      ));
      
  }
source_py: def sum_series_12_32_52_2n_12_1(n):
      return int((((n * ((2 * n) - 1)) * ((2 * n) + 1)) / 3))
source_cpp: int sum_series_12_32_52_2n_12_1(int n) {
    return ( n * ( 2 * n - 1 ) * ( 2 * n + 1 ) ) / 3;
  }