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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6. 	int a, b;
  7. 	cin>>a>>b;
  8. 	if((a-b)%10==9) cout<<(a-b)-1;
  9. 	else cout<<(a-b)+1;
  10. 	return 0;
  11. }
Success #stdin #stdout 0s 3300KB
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https://ideone.com/zPkaCz
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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