View Compilation Error

0_0_38713968_11633.cpp: In function 'bool toposort()':
0_0_38713968_11633.cpp:30:17: error: 'class std::queue<std::pair<int, int> >' has no member named 'top'; did you mean 'pop'?
   30 |         int x=q.top().first;
      |                 ^~~
      |                 pop
0_0_38713968_11633.cpp:31:24: error: 'class std::queue<std::pair<int, int> >' has no member named 'top'; did you mean 'pop'?
   31 |         tp.push_back(q.top().second);
      |                        ^~~
      |                        pop