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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define pll pair<ll,ll>
  4. #define pii pair<int,int>
  5. #define mll map<ll,ll>
  6. #define mii map<int,int>
  7. #define mp make_pair
  8. #define pb push_back
  9. #define f(i,b) for(ll i=0;i<(int)b;i++)
  10. #define all(c) (c).begin(), (c).end()
  11. #define F first
  12. #define S second
  13. #define CLR(p) memset(p, 0, sizeof(p))
  14. #define SET(p) memset(p, -1, sizeof(p))
  15. //#define reset(a,0) memset(a,0,sizeof a);
  16. #define boost ios_base::sync_with_stdio(false);cin.tie(NULL);
  17. typedef long long int ll;
  18. const int MAX=1e6+5;
  19. #define MOD 1000000007
  20. /*std::cout << std::fixed;
  21. std::cout << std::setprecision(6);*/
  22.  
  23.  
  24.  
  25. /************************************
  26.  
  27.  
  28.  
  29. *************************************/
  30.  
  31.  
  32. int main(){
  33. 	boost;
  34. 	ll n;
  35. 	cin>>n;
  36. 	string s;
  37. 	cin>>s;
  38. 	ll ar[n];
  39. 	for(ll i=0;i<n;i++)
  40. 		cin>>ar[i];
  41.  
  42. 	ll dp[4];
  43. 	CLR(dp);
  44. 	ll h=0,a=0,r=0,d=0,h1=0;
  45. 	ll sum=0;
  46. 	ll mini=INT_MAX,id=-1;
  47. 	for(ll i=0;i<n;i++){
  48. 		if(s[i]=='h'){
  49. 			dp[3]+=d;
  50. 			for(ll i=0;i<4;i++){
  51. 				if(dp[i]<mini){
  52. 					mini=dp[i];
  53. 					id=i;
  54. 				}
  55. 			}
  56. 			sum+=mini;
  57. 			mini=INT_MAX;
  58. 			d=0;
  59. 			for(ll i=id;i<4;i++)
  60. 				dp[i]=0;
  61. 			h+=ar[i];
  62. 		}
  63. 		if(s[i]=='a'){
  64. 			// dp[0]+=h;
  65. 			// h=0;
  66. 			h1=h;
  67. 			h=0;
  68. 			a+=ar[i];
  69. 		}
  70. 		if(s[i]=='r'){
  71. 			dp[1]+=a;
  72. 			dp[0]+=h1;
  73. 			h1=0;
  74. 			a=0;
  75. 			r+=ar[i];
  76. 		}
  77. 		if(s[i]=='d'){
  78. 			dp[2]+=r;
  79. 			r=0;
  80. 			d+=ar[i];
  81. 		}
  82. 		// for(ll x:dp)
  83. 		// 	cout<<x<<" ";
  84. 		// cout<<endl;
  85. 	}
  86. 	dp[3]+=d;
  87. 	// a
  88. 	for(ll i=0;i<4;i++){
  89. 		if(dp[i]<mini){
  90. 			mini = dp[i];
  91. 			id = i;
  92. 		}
  93. 	}
  94. 	sum+=mini;
  95. 	cout<<sum<<endl;
  96. 	return 0;
  97. }
Success #stdin #stdout 0s 4396KB
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https://ideone.com/oLdDQu
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
secret

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