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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define F(i, l, r) for(auto i = l; i != r; i++)
  4. #define ret return
  5. #define pb push_back
  6. #define cont continue
  7. #define fi0(x) memset((x), 0, sizeof(x))
  8.  
  9. typedef long long int lint;
  10. const lint mod = 1000000007;
  11.  
  12. int add(int v, int u){
  13. 	v += u;
  14. 	if(v >= mod)v -= mod;
  15. 	ret v;
  16. }
  17.  
  18. int mul(lint v, lint u){
  19. 	ret (v*u)%mod;
  20. }
  21.  
  22. class RainbowGraph{
  23. 	public:
  24. 	vector<int> col;
  25. 	bool gr[111][111];
  26. 	int n, m;
  27. 	int dp[10][1<<11][11][11];
  28. 	int ptr;
  29. 	int revid[111];
  30. 	int id[11][11];
  31. 	int all_da_ptrs[11];
  32. 	int ans[1<<11][101];
  33. 	int countWays(vector<int> c, vector<int> a, vector<int> b){
  34. 		n = (int)c.size();
  35. 		m = (int)a.size();
  36. 		col = c;
  37. 		fi0(dp);
  38. 		memset(gr, 0, sizeof(gr));
  39. 		fi0(ans);
  40. 		F(i, 0, m){gr[a[i]][b[i]] = true; gr[b[i]][a[i]] = true;}
  41. 		F(cc, 0, 10){
  42. 			ptr = 0;
  43. 			F(i, 0, n)if(col[i] == cc){revid[i] = ptr; id[cc][ptr++] = i;}
  44. 			all_da_ptrs[cc] = ptr;
  45. 			if(ptr == 0)cont;
  46. 			F(mask, 1, 1<<ptr){
  47. 				F(v, 0, ptr){
  48. 					F(u, 0, ptr){
  49. 						if(!(mask&(1<<v)))cont;
  50. 						if(!(mask&(1<<u)))cont;
  51. 						if(__builtin_popcount(mask) != 1 && v == u)cont;
  52. 						if(__builtin_popcount(mask)==1){dp[cc][mask][v][u] = 1; cont;}
  53. 						int pmask = mask^(1<<u);
  54. 						F(last, 0, ptr){
  55. 							if(!(pmask&(1<<last)))cont;
  56. 							if(!gr[id[cc][last]][id[cc][u]])cont;
  57. 							dp[cc][mask][v][u] = add(dp[cc][mask][v][u], dp[cc][pmask][v][last]);
  58. 						}
  59. 					}
  60. 				}
  61. 			}
  62. 		}
  63. 		F(mask, 1, 1<<10){
  64. 			F(cc, 0, 10)if(all_da_ptrs[cc] == 0 && mask&(1<<cc))cont;
  65. 			F(last, 0, n){
  66. 				if(!(mask&(1<<col[last])))cont;
  67. 				F(fst, 0, n){
  68. 					if(col[fst] != col[last])cont;
  69. 					if(dp[col[last]][(1<<all_da_ptrs[col[last]])-1][revid[fst]][revid[last]] == 0)cont;
  70. 					if(__builtin_popcount(mask)==1){ans[mask][last] = add(ans[mask][last], dp[col[last]][(1<<all_da_ptrs[col[last]])-1][revid[fst]][revid[last]]); cont;}
  71. 					int pmask = mask^(1<<col[last]);
  72. 					F(kek, 0, n){
  73. 						if(!(pmask&(1<<col[kek])) || !gr[kek][fst])cont;
  74. 						ans[mask][last] = add(ans[mask][last], mul(ans[pmask][kek], dp[col[last]][(1<<all_da_ptrs[col[last]])-1][revid[fst]][revid[last]]));
  75. 					}			
  76. 				}
  77. 			}
  78. 		}
  79. 		int ama = (1<<10)-1;
  80. 		F(cc, 0, 10)if(all_da_ptrs[cc] == 0)ama ^= (1<<cc);
  81. 		int tot = 0;
  82. 		F(last, 0, n)tot = add(tot, ans[ama][last]);
  83. 		ret tot;
  84. 	}
  85. };
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
/usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status
stdout 
Standard output is empty
https://ideone.com/y6RhFZ
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
secret

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