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Mar 21st, 2018
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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7. long long broj;
  8.  
  9. int k;
  10. cin>>broj>>k;
  11.  
  12. long long x=1;
  13. for (long long i=broj+1; i>0; i+=x)
  14. {
  15. int sum=0;
  16. for (long long y=1; y<i; y*=10)
  17. {
  18. if ((i/y)%10==7)
  19. {
  20. sum++;
  21. }
  22. }
  23. if ((i/x)%10==7)
  24. {
  25. x*=10;
  26. }
  27.  
  28. if (sum>=k)
  29. {
  30. cout<<i<<endl;
  31. break;
  32. }
  33. }
  34. return 0;
  35. }
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