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  1. #include <bits/stdc++.h>
  2. #define gc getchar_unlocked
  3. #define fo(i,n) for(i=0;i<n;i++)
  4. #define Fo(i,k,n) for(i=k;i<n;i++)
  5. #define ll long long
  6. #define pii pair<int,int>
  7. #define vi vector<int>
  8. #define pb push_back
  9. #define mp make_pair
  10. #define F first
  11. #define S second
  12. using namespace std;
  13. bool f(int a, int b, int no){
  14. 	// cout<<no<<endl;
  15. 	int x, y;
  16. 	int six = no/6;
  17. 	int cut = min(2*a, 3*b)/6;
  18. 	x = no/2; 
  19. 	y = no/3;
  20. 	int x2 = x-six;
  21. 	int x3 = y-six;
  22. 	x2 = a-x2;
  23. 	x3 = b-x3;
  24. 	if(x2<=0 && x3<=0)
  25. 		return true;
  26. 	if(x2+x3<=six)
  27. 		return true;
  28. 	return false;
  29.  
  30. }
  31. int main() {
  32. 	int a, b, i;
  33. 	cin >> a >>b;
  34. 	int x, y;
  35. 	x = 2*a, y = 3*b;
  36. 	i=max(x, y);
  37. 	while( f(a, b, i) == false ){
  38. 		i++;
  39. 		while(i%2 !=0 && i%3 !=0)
  40. 			i++;
  41. 	}
  42. 	cout<<i<<endl;
  43. 	return 0;
  44. }
Success #stdin #stdout 0s 3416KB
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https://ideone.com/KTmgd2
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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