fork download
copy 
  1. #include<bits/stdc++.h>
  2. #define ll long long
  3. using namespace std;
  4. ll n,f[2000006],a[22][22];
  5. int main()
  6. {
  7.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  8.     freopen("QUEUE.inp", "r", stdin);
  9.     freopen("QUEUE.out", "w", stdout);
  10.     cin >> n;
  11.     for(int i = 0; i < n; i++)
  12.         for(int j = 0; j < n; j++)
  13.         {
  14.             cin >> a[i][j];
  15.         }
  16.     memset(f, -0x3f, sizeof f);
  17.     ll tt = (1<<n)-1;
  18.     f[0] = 0;
  19.     for(int i = 0; i < tt; i++)
  20.     {
  21.         ll d = __builtin_popcount(i);
  22.         for(int j = 0; j < n; j++)
  23.         {
  24.             if(!((i>>j)&1))
  25.             {
  26.                 ll p = i | (1<<j);
  27.                 f[p] = max(f[p],f[i] + a[j][d]);
  28.             }
  29.         }
  30.     }
  31.     cout << f[tt];
  32. }
  33.  
Success #stdin #stdout 0.01s 19332KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/OhOsGj
language:
C++14 (gcc 8.3)
created:
6 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!