| 4 | int l, r; |
| 5 | ll x, lazy; |
| 6 | node() {} |
| 7 | node(int _l, int _r) : l(_l), r(_r), x(0), lazy(0) { } |
| 8 | node(int _l, int _r, ll _x) : node(_l,_r) { x = _x; } |
| 9 | node(node a, node b) : node(a.l,b.r) { x = a.x + b.x; } |
nothing calls this directly
no outgoing calls
no test coverage detected