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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	long long a, b;
  6. 	cin >> a >> b;
  7. 	cout << (b-a) - a%(b-a); 
  8.  	return 0;
  9. }
Success #stdin #stdout 0s 5288KB
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https://ideone.com/mnumDt
language:
C++14 (gcc 8.3)
created:
13 days ago
visibility:
public

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