View Compilation Error

0_0_39488506_32270.cpp: In function 'void solve()':
0_0_39488506_32270.cpp:83:48: error: 'q' was not declared in this scope
   83 |         for (int i = 1;i <= n;++i) vis[i] = 0, q.push(make_pair(-dis[i], i));
      |                                                ^