title: Sum Matrix Element Absolute Difference Row Column Numbers 1
signature: pub fn sum_matrix_element_absolute_difference_row_column_numbers_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(
        63, 
        83328
      ));
      
      println!("TEST-1...{}", driver(
        72, 
        124392
      ));
      
      println!("TEST-2...{}", driver(
        28, 
        7308
      ));
      
      println!("TEST-3...{}", driver(
        35, 
        14280
      ));
      
      println!("TEST-4...{}", driver(
        6, 
        70
      ));
      
      println!("TEST-5...{}", driver(
        70, 
        114310
      ));
      
      println!("TEST-6...{}", driver(
        20, 
        2660
      ));
      
      println!("TEST-7...{}", driver(
        8, 
        168
      ));
      
      println!("TEST-8...{}", driver(
        8, 
        168
      ));
      
      println!("TEST-9...{}", driver(
        35, 
        14280
      ));
      
  }
source_py: def sum_matrix_element_absolute_difference_row_column_numbers_1(n):
      sum = 0
      for i in range(n):
          sum += (i * (n - i))
      return (2 * sum)
source_cpp: int sum_matrix_element_absolute_difference_row_column_numbers_1(int n) {
    int sum = 0;
    for ( int i = 0;
    i < n;
    i ++ ) sum += i * ( n - i );
    return 2 * sum;
  }