Owl Get a Life

Compile Error

landmarks.cpp: In function ‘bool query(int, int, int, int)’:
landmarks.cpp:18:6: error: ‘st12’ was not declared in this scope
18 | if (st12) return (bool)(lower_bound(d1.begin(), d1.end(), X2) - lower_bound(d1.begin(), d1.end(), X1)) == (bool)(lower_bound(d2.begin(), d2.end(), Y2) - lower_bound(d2.begin(), d2.end(), Y1));
| ^~~~
landmarks.cpp:19:6: error: ‘st34’ was not declared in this scope
19 | if (st34) {
| ^~~~