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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. #define M1 					1000000007
  5. #define M2 					998244353
  6. #define ll 					long long int
  7. #define pll 				pair<ll,ll>
  8. #define mll 				map<ll,ll>
  9. #define F 					first
  10. #define S 					second
  11. #define PB 					push_back
  12. #define mp 					make_pair
  13. #define lb 					lower_bound
  14. #define ub 					upper_bound
  15. #define V(a) 				vector<a>
  16. #define endl 				'\n'
  17. #define test(t) 			while(t--)
  18. #define PI 					acos(-1.0)
  19. #define rep(i,a,b) 			for(ll i=a;i<b;i++)
  20. #define repp(i,b,a) 		for(ll i=b-1;i>=a;i--)
  21. #define clr(ar, val)		memset(ar, val, sizeof(ar))
  22. #define setbits(x) 			__builtin_popcountll(x)
  23. #define zrobits(x) 			__builtin_ctzll(x)
  24. #define ps(y) 				fixed << setprecision(y)
  25. #define all(x) 				begin(x),end(x)
  26. #define allr(x) 			rbegin(x),rend(x)
  27. const int inf= 				0x3f3f3f3f;
  28. const ll INF= 				0x3f3f3f3f3f3f3f3f;
  29. const int dx[4]= 			{ 0, -1, 0, 1 };
  30. const int dy[4]= 			{ -1, 0, 1, 0 };
  31.  
  32.  
  33.  
  34. class EmptyTheBox{
  35.     public:
  36.     double Calculate(long long int subset){
  37.         double t = 1,sum=0;
  38.         while(subset > 0){
  39.             if (subset&1) sum += t;
  40.             subset >>=1;
  41.             t++;
  42.         }
  43.         return sum;
  44.     }
  45.  
  46. 	double minExpectedPenalty(int D, int T){
  47.  
  48. 		double* rollprob = new double[2*D+1]();
  49. 		for(int i = 1; i<=D;++i){
  50. 			for (int j = 1; j<=D;++j){
  51. 				rollprob[i+j] += 1./(D*D);
  52. 			}
  53. 		}
  54.         int excess = 0;
  55.         while(T > 2*D) excess+=T,T--;
  56.         T = min(2*D,T);
  57.         double* dp = new double[1<<T]();
  58.         for(long long int subset = 0; subset<(1<<T);++subset){
  59.             for (int roll = 2; roll <= 2*D; ++roll){
  60.                 double X = Calculate(subset);
  61.                 for(long long int reduceset = 1;reduceset < (1<<T);++reduceset){
  62.                     if (((subset&reduceset) == reduceset) && (Calculate(reduceset) == roll)){
  63.                             X = min(X,dp[subset^reduceset]);
  64.                     }
  65.                 }
  66.                 dp[subset] += rollprob[roll]*X;
  67.             } 
  68.         }
  69.         return (dp[(1<<T)-1] + excess);
  70. 	}	
  71. };
  72.  
  73. // int main(){
  74. //     int d,t;
  75. //     cin >> d >> t;
  76. //     EmptyTheBox empbx;
  77. //     cout << empbx.minExpectedPenalty(d,t) << endl;
  78. // }
  79.  
  80.  
  81.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status
stdout
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Standard output is empty
https://ideone.com/T0hqih
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
secret

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