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  1. #include <bits/stdc++.h>
  2.  
  3. #define ll long long
  4. #define el cout << '\n'
  5. #define BIT(n) (1ll << (n))
  6. #define bit(mask, i) (((mask) >> (i)) & 1)
  7.  
  8. using namespace std;
  9.  
  10. const int maxn = 12;
  11. const ll INF = 1e4;
  12.  
  13. int t;
  14. ll cost[maxn + 10][maxn + 10], dp[maxn + 10][BIT(maxn)];
  15.  
  16. void minimize(ll &a, ll b)
  17. {
  18.     a = min(a, b);
  19. }
  20.  
  21. int main()
  22. {
  23.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  24.     if (fopen("TRUYENFILE.INP", "r"))
  25.     {
  26.         freopen("TRUYENFILE.INP", "r", stdin);
  27.         freopen("TRUYENFILE.OUT", "w", stdout);
  28.     }
  29.  
  30.     cin >> t;
  31.     while (t--)
  32.     {
  33.         int n;
  34.         cin >> n;
  35.         for (int i = 0; i < n; i++)
  36.             for (int j = 0; j < n; j++)
  37.                 cin >> cost[i][j];
  38.         for (int i = 0; i < n; i++)
  39.             for (int mask = 0; mask < BIT(n); mask++)
  40.                 dp[i][mask] = INF;
  41.         for (int i = 0; i < n; i++)
  42.             dp[i][0] = dp[i][BIT(i)] = 0;
  43.         for (int mask = 0; mask < BIT(n); mask++)
  44.             for (int i = 0; i < n; i++)
  45.                 if (bit(mask, i))
  46.                     for (int submask = mask; submask; submask = (submask - 1) & mask)
  47.                         for (int j = 0; j < n; j++)
  48.                             if (bit(submask, j))
  49.                                 minimize(dp[i][mask], cost[i][j] + max(dp[j][submask], dp[i][mask ^ submask]));
  50. //        for (int i = 0; i < n; i++)
  51. //        {
  52. //            for (int mask = 0; mask < BIT(n); mask++)
  53. //                cout << dp[i][mask] << ' ';
  54. //            el;
  55. //        }
  56.         cout << dp[0][BIT(n) - 1], el;
  57.     }
  58. }
  59.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/ZtXdht
language:
C++14 (gcc 8.3)
created:
9 days ago
visibility:
public

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