/in/foo.cc: In function 'int main()':
/in/foo.cc:38:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
   38 |                 auto [d, u]=q.top(); q.pop();
      |                      ^
/in/foo.cc:40:26: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
   40 |                 for(auto [v, w]:g[u]){
      |                          ^