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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int a;
  6. cin>>a;
  7. int ilo=10;
  8. while(ilo<a){
  9. 	ilo=ilo*10;
  10. }
  11. cout<<ilo-1-a;
  12. 	return 0;
  13. }
Success #stdin #stdout 0.01s 5324KB
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2021
https://ideone.com/mxb3qq
language:
C++14 (gcc 8.3)
created:
19 hours ago
visibility:
public

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