answer.code:7:66: error: ‘int time’ redeclared as different kind of entity
    7 | int left[MAX_N], right[MAX_N], n, res, vis[MAX_N], match[MAX_N], time, prevX[MAX_N], prevY[MAX_N];
      |                                                                  ^~~~
In file included from /usr/include/pthread.h:23,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/gthr-default.h:35,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/gthr.h:148,
                 from /usr/include/c++/13/ext/atomicity.h:35,
                 from /usr/include/c++/13/bits/ios_base.h:39,
                 from /usr/include/c++/13/streambuf:43,
                 from /usr/include/c++/13/bits/streambuf_iterator.h:35,
                 from /usr/include/c++/13/iterator:66,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:54,
                 from answer.code:1:
/usr/include/time.h:75:15: note: previous declaration ‘time_t time(time_t*)’
   75 | extern time_t time (time_t *__timer) __THROW;
      |               ^~~~
answer.code: In function ‘int bfs(int)’:
answer.code:14:20: warning: ISO C++ forbids incrementing a pointer of type ‘time_t (*)(time_t*) noexcept’ {aka ‘long int (*)(long int*) noexcept’} [-Wpointer-arith]
   14 |     vis[start] = ++time;
      |                    ^~~~
answer.code:14:20: error: lvalue required as increment operand
answer.code:28:48: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   28 |             if ((temp = match[v]) && vis[temp] != time) {
      |                                      ~~~~~~~~~~^~~~~~~
answer.code:30:29: error: invalid conversion from ‘time_t (*)(time_t*) noexcept’ {aka ‘long int (*)(long int*) noexcept’} to ‘int’ [-fpermissive]
   30 |                 vis[temp] = time;
      |                             ^~~~
      |                             |
      |                             time_t (*)(time_t*) noexcept {aka long int (*)(long int*) noexcept}
answer.code: In function ‘int main()’:
answer.code:58:16: error: reference to ‘left’ is ambiguous
   58 |         cin >> left[i] >> right[i];
      |                ^~~~
/usr/include/c++/13/bits/ios_base.h:1042:3: note: candidates are: ‘std::ios_base& std::left(ios_base&)’
 1042 |   left(ios_base& __base)
      |   ^~~~
answer.code:7:5: note:                 ‘int left [10200]’
    7 | int left[MAX_N], right[MAX_N], n, res, vis[MAX_N], match[MAX_N], time, prevX[MAX_N], prevY[MAX_N];
      |     ^~~~
answer.code:58:27: error: reference to ‘right’ is ambiguous
   58 |         cin >> left[i] >> right[i];
      |                           ^~~~~
/usr/include/c++/13/bits/ios_base.h:1050:3: note: candidates are: ‘std::ios_base& std::right(ios_base&)’
 1050 |   right(ios_base& __base)
      |   ^~~~~
answer.code:7:18: note:                 ‘int right [10200]’
    7 | int left[MAX_N], right[MAX_N], n, res, vis[MAX_N], match[MAX_N], time, prevX[MAX_N], prevY[MAX_N];
      |                  ^~~~~
answer.code:64:27: error: reference to ‘left’ is ambiguous
   64 |             if (i != j && left[i] < left[j] && left[j] < right[i] && right[i] < right[j]) {
      |                           ^~~~
/usr/include/c++/13/bits/ios_base.h:1042:3: note: candidates are: ‘std::ios_base& std::left(ios_base&)’
 1042 |   left(ios_base& __base)
      |   ^~~~
answer.code:7:5: note:                 ‘int left [10200]’
    7 | int left[MAX_N], right[MAX_N], n, res, vis[MAX_N], match[MAX_N], time, prevX[MAX_N], prevY[MAX_N];
      |     ^~~~
answer.code:64:37: error: reference to ‘left’ is ambiguous
   64 |             if (i != j && left[i] < left[j] && left[j] < right[i] && right[i] < right[j]) {
      |                                     ^~~~
/usr/include/c++/13/bits/ios_base.h:1042:3: note: candidates are: ‘std::ios_base& std::left(ios_base&)’
 1042 |   left(ios_base& __base)
      |   ^~~~
answer.code:7:5: note:                 ‘int left [10200]’
    7 | int left[MAX_N], right[MAX_N], n, res, vis[MAX_N], match[MAX_N], time, prevX[MAX_N], prevY[MAX_N];
      |     ^~~~
answer.code:64:48: error: reference to ‘left’ is ambiguous
   64 |             if (i != j && left[i] < left[j] && left[j] < right[i] && right[i] < right[j]) {
      |                                                ^~~~
/usr/include/c++/13/bits/ios_base.h:1042:3: note: candidates are: ‘std::ios_base& std::left(ios_base&)’
 1042 |   left(ios_base& __base)
      |   ^~~~
answer.code:7:5: note:                 ‘int left [10200]’
    7 | int left[MAX_N], right[MAX_N], n, res, vis[MAX_N], match[MAX_N], time, prevX[MAX_N], prevY[MAX_N];
      |     ^~~~
answer.code:64:58: error: reference to ‘right’ is ambiguous
   64 |             if (i != j && left[i] < left[j] && left[j] < right[i] && right[i] < right[j]) {
      |                                                          ^~~~~
/usr/include/c++/13/bits/ios_base.h:1050:3: note: candidates are: ‘std::ios_base& std::right(ios_base&)’
 1050 |   right(ios_base& __base)
      |   ^~~~~
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