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  1. using System;
  2. using System.Collections.Generic;
  3. using System.IO;
  4. using System.Linq;
  5. public class Solution {
  6.  
  7.     static void Main(String[] args) {
  8.         int t = Convert.ToInt32(Console.ReadLine());
  9.         for(int a0 = 0; a0 < t; a0++){
  10.             long n = Convert.ToInt32(Console.ReadLine());
  11.             Console.WriteLine(Difference(n));
  12.         }
  13.     }
  14.  
  15.     static long Difference(long n)
  16.     {
  17.         long i= (n*n*n*n +2*n*n*n +n*n)/4;
  18.         long j= (2*n*n*n + 3*n*n +n)/6;
  19.  
  20.         return i-j;
  21.     }
  22. }
Success #stdin #stdout 0.02s 26612KB
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https://ideone.com/24bNv4
language:
C# (gmcs 5.20.1)
created:
2 years ago
visibility:
public

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