View Compilation Error

0_0_39360605_19147.cpp: In function 'void solve()':
0_0_39360605_19147.cpp:88:28: error: no matching function for call to 'seg_tree::seg_tree()'
   88 |         seg_tree sg_c(sz), sg_v;
      |                            ^~~~
0_0_39360605_19147.cpp:35:5: note: candidate: 'seg_tree::seg_tree(int)'
   35 |     seg_tree(int n) {
      |     ^~~~~~~~
0_0_39360605_19147.cpp:35:5: note:   candidate expects 1 argument, 0 provided
0_0_39360605_19147.cpp:32:8: note: candidate: 'constexpr seg_tree::seg_tree(const seg_tree&)'
   32 | struct seg_tree {
      |        ^~~~~~~~
0_0_39360605_19147.cpp:32:8: note:   candidate expects 1 argument, 0 provided
0_0_39360605_19147.cpp:32:8: note: candidate: 'constexpr seg_tree::seg_tree(seg_tree&&)'
0_0_39360605_19147.cpp:32:8: note:   candidate expects 1 argument, 0 provided