View Compilation Error

0_0_34158184_21969.cpp:26:14: error: no matching function for call to 'Edg::Edg()'
 }edg[(N*2)+50];
              ^
0_0_34158184_21969.cpp:26:14: note: candidates are:
0_0_34158184_21969.cpp:21:5: note: Edg::Edg(int, int, LL, LL)
     Edg(int v,int ne,LL w,LL bb):to(v),next(ne),a(w),b(bb){};
     ^
0_0_34158184_21969.cpp:21:5: note:   candidate expects 4 arguments, 0 provided
0_0_34158184_21969.cpp:20:8: note: constexpr Edg::Edg(const Edg&)
 struct Edg{
        ^
0_0_34158184_21969.cpp:20:8: note:   candidate expects 1 argument, 0 provided
0_0_34158184_21969.cpp:20:8: note: constexpr Edg::Edg(Edg&&)
0_0_34158184_21969.cpp:20:8: note:   candidate expects 1 argument, 0 provided