answer.code:6:19: warning: multi-character character constant [-Wmultichar]
    6 | const int kMod = 1'000'002'022;
      |                   ^~~~~
answer.code:6:27: warning: missing terminating ' character
    6 | const int kMod = 1'000'002'022;
      |                           ^
answer.code:6:27: error: missing terminating ' character
    6 | const int kMod = 1'000'002'022;
      |                           ^~~~~
answer.code:6:19: error: expected ‘,’ or ‘;’ before '\x303030'
    6 | const int kMod = 1'000'002'022;
      |                   ^~~~~
answer.code:33:10: error: ‘Node’ was not declared in this scope
   33 |   vector<Node> tree;
      |          ^~~~
answer.code:33:14: error: template argument 1 is invalid
   33 |   vector<Node> tree;
      |              ^
answer.code:33:14: error: template argument 2 is invalid
answer.code: In constructor ‘SegmentTree::SegmentTree(std::vector<std::pair<int, int> >)’:
answer.code:39:10: error: request for member ‘resize’ in ‘((SegmentTree*)this)->SegmentTree::tree’, which is of non-class type ‘int’
   39 |     tree.resize(4 * n + 5);
      |          ^~~~~~
answer.code: In member function ‘void SegmentTree::build(int, int, int, std::vector<std::pair<int, int> >&)’:
answer.code:46:11: error: invalid types ‘int[int]’ for array subscript
   46 |       tree[id] = Node(val.first, val.second);
      |           ^
answer.code:46:18: error: ‘Node’ was not declared in this scope
   46 |       tree[id] = Node(val.first, val.second);
      |                  ^~~~
answer.code:53:11: error: invalid types ‘int[int]’ for array subscript
   53 |       tree[id] = tree[chld] + tree[chld+1];
      |           ^
answer.code:53:22: error: invalid types ‘int[int]’ for array subscript
   53 |       tree[id] = tree[chld] + tree[chld+1];
      |                      ^
answer.code:53:35: error: invalid types ‘int[int]’ for array subscript
   53 |       tree[id] = tree[chld] + tree[chld+1];
      |                                   ^
answer.code: In member function ‘void SegmentTree::propagate(int)’:
answer.code:58:14: error: invalid types ‘int[int]’ for array subscript
   58 |     if (!tree[id].lazy) return;
      |              ^
answer.code:60:11: error: invalid types ‘int[int]’ for array subscript
   60 |       tree[2*id + i].flip();
      |           ^
answer.code:62:9: error: invalid types ‘int[int]’ for array subscript
   62 |     tree[id].lazy = false;
      |         ^
answer.code: In member function ‘void SegmentTree::update(int, int, int, int, int)’:
answer.code:71:11: error: invalid types ‘int[int]’ for array subscript
   71 |       tree[id].flip();
      |           ^
answer.code:79:11: error: invalid types ‘int[int]’ for array subscript
   79 |       tree[id] = tree[chld] + tree[chld+1];
      |           ^
answer.code:79:22: error: invalid types ‘int[int]’ for array subscript
   79 |       tree[id] = tree[chld] + tree[chld+1];
      |                      ^
answer.code:79:35: error: invalid types ‘int[int]’ for array subscript
   79 |       tree[id] = tree[chld] + tree[chld+1];
      |                                   ^
answer.code: In member function ‘int SegmentTree::query()’:
answer.code:84:16: error: invalid types ‘int[int]’ for array subscript
   84 |     return tree[1].val[1];
      |                ^