View Compilation Error

0_0_37713167_26.cpp: In member function 'bool Point::get_ans(Point)':
0_0_37713167_26.cpp:44:8: error: 'all' was not declared in this scope
    if (all[i].y == x.y) continue;
        ^
0_0_37713167_26.cpp:45:19: error: 'all' was not declared in this scope
    if (!check_(x, all[i])) return false;
                   ^