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Nov 13th, 2018
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  1. program HelloWorld;
  2. var a: word;
  3. begin
  4. read (a);
  5. if ((a div 1000)>0) then a:=(a div 1000)+((a div 100) mod 10)+((a div 10) mod 10)+ (a mod 10)
  6. else if (((a div 100)>0) and ((a div 1000)=0)) then a:=(a div 100)+(a div 10 mod 10)+(a mod 10)
  7. else if (((a div 10)>0) and ((a div 100)=0)) then a:=(a div 10)+(a mod 10)
  8. else a:= a;
  9. write (a);
  10. end.
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