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  1. var k,n,i,b:integer;
  2. begin
  3. read(n);
  4. k:=0;
  5. for i:=1 to n do
  6. begin
  7. read(b);
  8. k:=k+b;
  9. k:= k mod 10;
  10. end;
  11. if k mod 2=0 then
  12. write('yes')
  13. else
  14. write('no');
  15. end.
Success #stdin #stdout 0s 4964KB
stdin
4
13
13
13
13
stdout
yes