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May 26th, 2018
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  1. Uses crt;
  2.  
  3. var
  4. k14,k2,k7,n14,i,N,r,a:integer;
  5.  
  6. begin
  7. k14 := 0;
  8. k2 := 0;
  9. k7 := 0;
  10. n14 := 0;
  11. readln(N);
  12. for i:=1 to N do
  13. begin
  14. readln(a);
  15. if((a mod 14) = 0) then
  16. begin
  17. k14 := k14 + 1;
  18. end
  19. else
  20. begin
  21. if((a mod 2) = 0) then
  22. begin
  23. k2 := k2 + 1;
  24. end;
  25. if((a mod 7) = 0) then
  26. begin
  27. k7 := k7 + 1;
  28. end;
  29. end;
  30. end;
  31.  
  32. n14 := n - k14;
  33.  
  34. r := n*(n-1) div 2 - (k7*k2 + k14*(k14-1) div 2 + k14*n14);
  35.  
  36. writeln(r);
  37.  
  38.  
  39. readkey;
  40. end.
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