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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. bool transform(int a,int b,int i,vector<int>update){
  5.  
  6. 	if(a>b){
  7. 		return false;
  8. 	}
  9.  
  10. 	if(a==b){
  11. 		update.push_back(b);
  12. 		return true;
  13. 	}
  14.  
  15. 	if(transform(a*2,i+1,b,update)){
  16. 		update.push_back(a);
  17. 		return true;
  18. 	}
  19. 	if(transform(a*10+1,i+1,b,update)){
  20. 		update.push_back(a);
  21. 		return true;
  22. 	}
  23. return false;
  24. }
  25. int main() {
  26. 	int a,b;
  27. 	cin>>a>>b;
  28. 	vector<int>update;
  29. 	int i = 1;
  30. 	if(transform(a,b,i,update)){
  31.  
  32. 		cout<<"Yes"<<i<<endl;
  33. 	}
  34. 	else
  35.  
  36. 	cout<<"NO";
  37. 	return 0;
  38. }
Success #stdin #stdout 0.01s 5320KB
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stdin
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2     162
stdout
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NO
https://ideone.com/Mt56Sw
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
public

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