View Compilation Error

0_0_32711807_25151.cpp: In function 'void Dijkstra(int)':
0_0_32711807_25151.cpp:51:11: error: call of overloaded 'qnode()' is ambiguous
     qnode tmp;
           ^
0_0_32711807_25151.cpp:51:11: note: candidates are:
0_0_32711807_25151.cpp:30:5: note: qnode::qnode(int, ll)
     qnode(int v = 0, ll dis = 0ll): v(v), dis(dis)    {}
     ^
0_0_32711807_25151.cpp:29:5: note: qnode::qnode()
     qnode() {}
     ^