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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. using ll = long long int;
  4. #define MOD (ll) (1e9+7)
  5.  
  6. ll pw(ll a,ll b)
  7. {
  8. 	ll res=1;
  9. 	while(b)
  10. 	{
  11. 		if(b%2 == 1)
  12. 		{
  13. 			res = (res*a)%MOD;
  14. 		}
  15. 		b=b/2;
  16. 		a = (a*a)%MOD;
  17. 	}
  18. 	return res%MOD;
  19. }
  20. int main()
  21. {
  22. 	ll t;
  23. 	cin>>t;
  24. 	while(t--)
  25. 	{
  26. 	ll n,k;
  27. 	cin>>n>>k;
  28.     ll h[n],g[n];
  29. 	for(int i=0;i<n;i++)
  30. 	{
  31. 		cin>>h[i];
  32. 	}
  33. 	for(int i=0;i<n;i++)
  34. 	{
  35. 		cin>>g[i];
  36. 	}
  37. 	ll cnt = 0;
  38. 	 for(int i=1;i<=(1LL<<n)-1;i++)
  39. 	 {
  40. 		 ll su = 0,last = -1;
  41. 		 ll fl = 0;
  42. 		for(int j=0;j<n;j++)
  43. 		{
  44. 			if(i&(1LL<<j) && h[j]>=last)
  45. 			{
  46.                su+=g[j];
  47. 			   last = h[j];
  48. 			}
  49. 			else if(i&(1LL<<j) && h[j]<last)
  50. 			{
  51. 				fl = 1;
  52. 				break;
  53. 			}
  54. 		}
  55. 		if(fl == 1)
  56. 		{
  57. 			continue;
  58. 		}
  59. 		else{
  60. 			if(su>=k)
  61. 			{
  62. 				cnt++;
  63. 			}
  64. 		}
  65. 	 }
  66. 	 cout<<cnt<<"\n";
  67. 	}
  68. }
Success #stdin #stdout 0.01s 5536KB
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https://ideone.com/Hy9GcU
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
secret

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