View Compilation Error

0_0_39535622_13161.cpp: In function 'int main()':
0_0_39535622_13161.cpp:59:31: error: 'x' was not declared in this scope
   59 |                     pt.insert(x);
      |                               ^
0_0_39535622_13161.cpp:60:31: error: 'y' was not declared in this scope
   60 |                     pt.insert(y);
      |                               ^