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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8.     int t, d;
  9.     long int a, b;
  10.  
  11.     cin >> t;
  12.  
  13.     for(int i = 0 ; i < t ; i++)
  14.     {
  15.             cin.clear();
  16.             cin.sync();
  17.  
  18.             cin >> a >> b;
  19.             if(a==10)   d = 0;
  20.             else     a = a%10;
  21.             switch(a)
  22.             {
  23.                       case 0:
  24.                            {
  25.                                 d = 1;
  26.                                 break;
  27.                            }
  28.                       case 1:
  29.                            {
  30.                                 d = 1;
  31.                                 break;
  32.                            }
  33.                       case 2:
  34.                            {
  35.                                 if(b%4==1)  d = 2;
  36.                                 if(b%4==2)  d = 4;
  37.                                 if(b%4==3)  d = 8;
  38.                                 if(b%4==0)  d = 6;
  39.                                 break;
  40.                            }
  41.                       case 3:
  42.                            {
  43.                                 if(b%4==1)  d = 3;
  44.                                 if(b%4==2)  d = 9;
  45.                                 if(b%4==3)  d = 7;
  46.                                 if(b%4==0)  d = 1;
  47.                                 break;
  48.                            }
  49.                       case 4:
  50.                            {
  51.                                 if(b%4==1 || b%4==3)  d = 4;
  52.                                 if(b%4==2 || b%4==0)  d = 6;
  53.                                 break;
  54.                            }
  55.                       case 5:
  56.                            {
  57.                                 d = 5;
  58.                                 break;
  59.                            }
  60.                       case 6:
  61.                            {
  62.                                 d = 6;
  63.                                 break;
  64.                            }
  65.                       case 7:
  66.                            {
  67.                                 if(b%4==1)  d = 7;
  68.                                 if(b%4==2)  d = 9;
  69.                                 if(b%4==3)  d = 3;
  70.                                 if(b%4==0)  d = 1;
  71.                                 break;
  72.                            }
  73.                       case 8:
  74.                            {
  75.                                 if(b%4==1)  d = 8;
  76.                                 if(b%4==2)  d = 4;
  77.                                 if(b%4==3)  d = 2;
  78.                                 if(b%4==0)  d = 6;
  79.                                 break;
  80.                            }
  81.                       case 9:
  82.                            {
  83.                                 if(b%4==1 || b%4==3)  d = 9;
  84.                                 if(b%4==2 || b%4==0)  d = 1;
  85.                                 break;
  86.                            }
  87.             }
  88.  
  89.             if(b==0)    d = 1;
  90.  
  91.             cout << d << endl;
  92.     }
  93.     return 0;
  94. }
  95.  
Success #stdin #stdout 0s 3412KB
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https://ideone.com/uqcor1
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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