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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6. int n;
  7. cin >> n;
  8. if (n > 0)
  9. cout << n - 1 << endl;
  10. else
  11. cout << "Ошибка ввода" << endl;
  12. return 0;
  13. }
Success #stdin #stdout 0s 3416KB
stdin
13
stdout
12