Eroare de compilare: main.cpp: In function 'void solve()': main.cpp:32:15: error: 'class std::stack<int>' has no member named 'back'; did you mean 'stack'? nod=q.back(); ^~~~ main.cpp:39:15: error: 'class std::stack<int>' has no member named 'push_back' q.push_back(g[nod].back().first); ^~~~~~~~~ main.cpp:46:15: error: 'class std::stack<int>' has no member named 'pop_back' q.pop_back(); ^~~~~~~~ main.cpp:26:20: warning: unused variable 'elem' [-Wunused-variable] int nrm,pp,nod,elem,a,i,k=0; ^~~~ main.cpp:26:25: warning: unused variable 'a' [-Wunused-variable] int nrm,pp,nod,elem,a,i,k=0; ^ main.cpp:26:27: warning: unused variable 'i' [-Wunused-variable] int nrm,pp,nod,elem,a,i,k=0; ^ Non zero exit status: 1