/in/foo.cc: In function 'void add(int, int)':
/in/foo.cc:50:24: error: 'heads' was not declared in this scope
   50 |         memchi[gn].nxt=heads[s];
      |                        ^~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:134:22: error: expected ';' before '\U0000ff1b'
  134 |                 ptr--；
      |                      ^~
      |                      ;
/in/foo.cc:135:47: error: 'i' was not declared in this scope
  135 |                 for(register int i=heads[me]; i; i=memchi[i].nxt) {
      |                                               ^
/in/foo.cc:151:44: error: 'fheads' was not declared in this scope; did you mean 'heads'?
  151 |                         for(register int i=fheads[me]; i; i=memchi[i].nxt) {
      |                                            ^~~~~~
      |                                            heads
/in/foo.cc: In function 'int get()':
/in/foo.cc:25:1: warning: control reaches end of non-void function [-Wreturn-type]
   25 | }
      | ^