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  1. using System;
  2. using System.Collections.Generic;
  3. public class Test
  4. {
  5.     class Program
  6.     {
  7.         public static int determine_value_at_position_of_an_array(List<int> arr, int potega)
  8.         {
  9.             int counter = 1;
  10.             int counter_2 = 0;
  11.             int current_value = 0;
  12.  
  13.             for (; counter<= potega; counter++)
  14.             {
  15.                 current_value = arr[counter_2];
  16.                 if (counter_2==arr.Count-1)
  17.                 {
  18.                     counter_2 = 0;
  19.                 }
  20.                 else
  21.                 {
  22.                     counter_2++;
  23.                 }
  24.             }
  25.  
  26.             return current_value;
  27.         }
  28.         public static int get_last_number(int n)
  29.         {
  30.             string temp = Convert.ToString(n);
  31.             char tempo = Convert.ToChar((temp[temp.Length - 1]));
  32.             int result = (int)Char.GetNumericValue(tempo);
  33.             return result;
  34.         }
  35.         public static List<int> Pattern_Finder(int podstawa)
  36.         {
  37.             List<int> sequence = new List<int>();
  38.  
  39.             int goal = (get_last_number(podstawa));
  40.             sequence.Add(goal);
  41.  
  42.             int startowa_potega = 2;
  43.             int temp = 0;
  44.  
  45.             while (true)
  46.             {
  47.                 temp = pow(podstawa, startowa_potega);
  48.                 if (get_last_number(temp) == goal)
  49.                 {
  50.                     break;
  51.                 }
  52.                 startowa_potega++;
  53.                 sequence.Add(get_last_number(temp));
  54.             }
  55.  
  56.             return sequence;
  57.         }
  58.  
  59.         public static int pow(int podstawa, int potega)
  60.         {
  61.             int result = 1;
  62.             while (potega > 0)
  63.             {
  64.                 result *= podstawa;
  65.                 potega--;
  66.             }
  67.             return result;
  68.         }
  69.  
  70.         public static int Answer_Finder(int podstawa, int potega)
  71.         {
  72.             switch (podstawa)
  73.             {
  74.                 case 0:
  75.                     return 1;
  76.                 case 1:
  77.                     return 1;
  78.             }
  79.  
  80.             List<int> sequence = Pattern_Finder(podstawa);
  81.             int result = determine_value_at_position_of_an_array(sequence, potega);
  82.             return result;
  83.         }
  84.  
  85.         public static void Main()
  86.         {
  87.             int n = Convert.ToInt32(Console.ReadLine());
  88.             while (n > 0)
  89.             {
  90.                 string[] temp_values = Console.ReadLine().Split(' ');
  91.                 int podstawa = Convert.ToInt32(temp_values[0]);
  92.                 int potega = Convert.ToInt32(temp_values[1]);
  93.                 Console.WriteLine(Answer_Finder(podstawa, potega));
  94.             }
  95.         }
  96.     }
  97. }
Runtime error #stdin #stdout #stderr 0s 135168KB
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stdout
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Unhandled Exception:
System.NullReferenceException: Object reference not set to an instance of an object
  at Test+Program.Main () [0x00015] in <aadb5cd4cd0b40dfb6d217f3caa1c3e4>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object
  at Test+Program.Main () [0x00015] in <aadb5cd4cd0b40dfb6d217f3caa1c3e4>:0
https://ideone.com/TA1xrb
language:
C# (gmcs 5.20.1)
created:
9 years ago
visibility:
public

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