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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. typedef  int ll;
  4. int main()
  5. {
  6.     ll a,b,c,d,e,f,g,h,i; double ro;
  7.     ll arr[21][6];
  8.     memset(arr,-1,sizeof(arr));
  9.         arr[0][1]=arr[0][2]=arr[0][3]=arr[0][4]=0;arr[0][0]=1;
  10.         arr[1][1]=arr[1][2]=arr[1][3]=arr[1][4]=1;arr[1][0]=1;
  11.         for(c=2;c<=20;c++)
  12.         {
  13.             d=1;
  14.             e=1;arr[c][0] = 1;
  15.             while(d!=5)
  16.             {g=0;
  17.                 e = e*c;
  18.                 f = e;
  19.                 g = f%10;
  20.                 arr[c][d] = g;
  21.                 d++;
  22.             }
  23.         }
  24. c=0;d=0;
  25.     cin>>a;
  26.     for(b=0;b<a;b++)
  27.     {
  28.         cin>>c>>d;
  29.  
  30.        h=0;i=0;ro=0.0;
  31.         if(d>4){
  32.         h = d-4;
  33.         i = h/4;
  34.         ro = h/4.0;
  35.  
  36.         if(i==ro)
  37.         {
  38.          cout<<arr[c][d-(4*i)]<<"\n";
  39.         }
  40.         else
  41.         {
  42.             i++;
  43.          cout<<arr[c][d-(4*i)]<<"\n";
  44.         }
  45.     }
  46.     else
  47.     {
  48.         cout<<arr[c][d]<<"\n";
  49.     }
  50.  
  51.     }
  52.  
  53.  
  54. }
  55.  
Success #stdin #stdout 0s 15240KB
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https://ideone.com/xKpbHN
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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