circle_selection.cpp: In function 'void sort_arrays()':
circle_selection.cpp:56:10: error: 'cx' was not declared in this scope; did you mean 'cmpx'?
56 | sort(cx + 1, cx + n + 1, cmpx);
| ^~
| cmpx
circle_selection.cpp:56:23: error: 'n' was not declared in this scope; did you mean 'yn'?
56 | sort(cx + 1, cx + n + 1, cmpx);
| ^
| yn
circle_selection.cpp:57:10: error: 'cy' was not declared in this scope; did you mean 'cmpy'?
57 | sort(cy + 1, cy + n + 1, cmpy);
| ^~
| cmpy
circle_selection.cpp: In function 'void restructure(int)':
circle_selection.cpp:79:9: warning: unused variable 'last' [-Wunused-variable]
79 | int last = -inf;
| ^~~~