Compilare: user.cpp: In function ‘void PrintSolution()’: user.cpp:72:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Sol.size()-1;i++) ^ user.cpp:74:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<Edge[Sol[i]][Sol[i+1]].size();j++) ^ user.cpp: In function ‘void Solve()’: user.cpp:47:9: warning: ‘node’ may be used uninitialized in this function [-Wmaybe-uninitialized] int node; ^ user.cpp: In function ‘int main()’: user.cpp:106:14: warning: ‘node’ may be used uninitialized in this function [-Wmaybe-uninitialized] DFS(node); ^