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  1. program Test;
  2.  
  3. var a, b, sum, diff: integer;
  4.  
  5. begin
  6. a := 10;
  7. b := 20;
  8. sum := a + b;
  9. diff := a - b;
  10.  
  11. writeln('Сумма = ', sum);
  12. writeln('Разность = ', diff);
  13. end.
Success #stdin #stdout 0.01s 5276KB
stdin
Standard input is empty
stdout
Сумма = 30
Разность = -10