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  1. #include <iostream>
  2.  
  3.  
  4. using namespace std;
  5. int ile;
  6. unsigned long long int a,b;
  7.  
  8. int main()
  9. {
  10.     cin>>ile;
  11.     for ( int i=0; i<ile; i++)
  12.     {
  13.         cin>>a>>b;a=a%10;
  14.         if(b==0) cout<<1<<endl;
  15.         else
  16.         {
  17.         switch (a)
  18.         {
  19.             case 0: cout<<0<<endl; break;
  20.             case 1: cout<<1<<endl; break;
  21.             case 2:
  22.                 {
  23.                     switch (b%4)
  24.                     {
  25.                     case 1:cout<<2<<endl; break;
  26.                     case 2:cout<<4<<endl; break;
  27.                     case 3:cout<<8<<endl; break;
  28.                       case 0: cout<<6<<endl; break;
  29.                     }
  30.                  } break;
  31.  
  32.            case 3:
  33.              {
  34.                  switch (b%4)
  35.                  {
  36.                      case 1: cout<<3<<endl; break;
  37.                      case 2: cout<<9<<endl; break;
  38.                      case 3: cout<<7<<endl; break;
  39.                      case 0: cout<<1<<endl; break;
  40.                  }
  41.              } break;
  42.       case 4:
  43.           switch (b%2)
  44.           {
  45.               case 1: cout<<4<<endl; break;
  46.               case 0: cout<<6<<endl; break;
  47.           } break;
  48.      case 5: cout<<5<<endl; break;
  49.      case 6: cout<<6<<endl; break;
  50.      case 7:
  51.          {
  52.              switch (b%4)
  53.              {
  54.                  case 1: cout<<7<<endl; break;
  55.                  case 2: cout<<9<<endl; break;
  56.                  case 3: cout<<3<<endl; break;
  57.                  case 0: cout<<1<<endl; break;
  58.              }
  59.          } break;
  60.      case 8:
  61.          {
  62.              switch (b%4)
  63.              {
  64.                  case 1: cout<<8<<endl; break;
  65.                  case 2: cout<<4<<endl; break;
  66.                  case 3: cout<<2<<endl; break;
  67.                  case 0: cout<<6<<endl; break;
  68.              }
  69.          } break;
  70.       case 9:
  71.           {
  72.               switch (b%2)
  73.               {
  74.                   case 1: cout<<1<<endl; break;
  75.                   case 0: cout<<9<<endl; break;
  76.               }
  77.           } break;
  78.  
  79.           }}
  80.  
  81.     }
  82.     return 0;
  83. }
  84.  
  85.  
  86.  
Success #stdin #stdout 0s 3412KB
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https://ideone.com/jD9LqR
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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