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  1. #include <iostream>
  2. using namespace std;
  3. #include <bits/stdc++.h>
  4. #define ll long long
  5. int main() {
  6. 	// your code goes here
  7. 	//every power of 3 is greater than all the previous powers added
  8. 	//like in bit-mask
  9. 	vector<ll>v;
  10. 	for (ll i=1; i<=2e18; i*=3)v.push_back(i);
  11. 	int q;
  12. 	cin>>q;
  13. 	while (q--){
  14. 		ll n;
  15. 		cin>>n;
  16. 		ll m=0;
  17. 		vector<int>vis(v.size(),0);
  18. 		for (int i=v.size()-1; i>=0; i--){
  19. 			if(m+v[i]<=n)
  20. 				m+=v[i], vis[i]=1;
  21. 		}
  22. 		//greatest number>=n
  23. 		if(m>=n){
  24. 			cout<<m<<endl;
  25. 			continue;
  26. 		}
  27. 		//if i am still less than n
  28. 		for (int i=0; i<v.size(); i++){
  29. 			if(!vis[i]){
  30. 				m+=v[i];
  31. 				break;
  32. 			}
  33. 			m-=v[i];
  34. 		}cout<<m<<endl;
  35. 	}
  36. 	return 0;
  37. }
Success #stdin #stdout 0.05s 5464KB
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https://ideone.com/nFu9wr
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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