foo.cc:1:1: error: stray '##' in program
    1 | ##include<iostream>
      | ^~
foo.cc:1:3: error: 'include' does not name a type
    1 | ##include<iostream>
      |   ^~~~~~~
In file included from /nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/cstdlib:75,
                 from /nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/stdlib.h:36,
                 from foo.cc:3:
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:98:8: error: 'size_t' does not name a type
   98 | extern size_t __ctype_get_mb_cur_max (void) __THROW __wur;
      |        ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:57:1: note: 'size_t' is defined in header '<cstddef>'; did you forget to '#include <cstddef>'?
   56 | #include <bits/floatn.h>
  +++ |+#include <cstddef>
   57 | 
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:213:36: error: 'size_t' has not been declared
  213 | extern int strfromd (char *__dest, size_t __size, const char *__format,
      |                                    ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:217:36: error: 'size_t' has not been declared
  217 | extern int strfromf (char *__dest, size_t __size, const char *__format,
      |                                    ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:221:36: error: 'size_t' has not been declared
  221 | extern int strfroml (char *__dest, size_t __size, const char *__format,
      |                                    ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:233:38: error: 'size_t' has not been declared
  233 | extern int strfromf32 (char *__dest, size_t __size, const char * __format,
      |                                      ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:239:38: error: 'size_t' has not been declared
  239 | extern int strfromf64 (char *__dest, size_t __size, const char * __format,
      |                                      ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:245:39: error: 'size_t' has not been declared
  245 | extern int strfromf128 (char *__dest, size_t __size, const char * __format,
      |                                       ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:251:39: error: 'size_t' has not been declared
  251 | extern int strfromf32x (char *__dest, size_t __size, const char * __format,
      |                                       ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:257:39: error: 'size_t' has not been declared
  257 | extern int strfromf64x (char *__dest, size_t __size, const char * __format,
      |                                       ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:277:27: error: 'locale_t' has not been declared
  277 |                           locale_t __loc) __THROW __nonnull ((1, 4));
      |                           ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:281:49: error: 'locale_t' has not been declared
  281 |                                     int __base, locale_t __loc)
      |                                                 ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:287:33: error: 'locale_t' has not been declared
  287 |                                 locale_t __loc)
      |                                 ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:293:55: error: 'locale_t' has not been declared
  293 |                                           int __base, locale_t __loc)
      |                                                       ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:297:53: error: 'locale_t' has not been declared
  297 |                         char **__restrict __endptr, locale_t __loc)
      |                                                     ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:301:52: error: 'locale_t' has not been declared
  301 |                        char **__restrict __endptr, locale_t __loc)
      |                                                    ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:306:31: error: 'locale_t' has not been declared
  306 |                               locale_t __loc)
      |                               ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:319:29: error: 'locale_t' has not been declared
  319 |                             locale_t __loc)
      |                             ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:326:29: error: 'locale_t' has not been declared
  326 |                             locale_t __loc)
      |                             ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:333:31: error: 'locale_t' has not been declared
  333 |                               locale_t __loc)
      |                               ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:340:31: error: 'locale_t' has not been declared
  340 |                               locale_t __loc)
      |                               ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:347:31: error: 'locale_t' has not been declared
  347 |                               locale_t __loc)
      |                               ^~~~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:412:25: error: 'size_t' has not been declared
  412 |                         size_t __statelen) __THROW __nonnull ((2));
      |                         ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:442:25: error: 'size_t' has not been declared
  442 |                         size_t __statelen,
      |                         ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:540:22: error: 'size_t' was not declared in this scope; did you mean 'std::size_t'?
  540 | extern void *malloc (size_t __size) __THROW __attribute_malloc__
      |                      ^~~~~~
      |                      std::size_t
In file included from /nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/cstdlib:41:
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/x86_64-unknown-linux-gnu/bits/c++config.h:298:33: note: 'std::size_t' declared here
  298 |   typedef __SIZE_TYPE__         size_t;
      |                                 ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:543:22: error: 'size_t' was not declared in this scope; did you mean 'std::size_t'?
  543 | extern void *calloc (size_t __nmemb, size_t __size)
      |                      ^~~~~~
      |                      std::size_t
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/x86_64-unknown-linux-gnu/bits/c++config.h:298:33: note: 'std::size_t' declared here
  298 |   typedef __SIZE_TYPE__         size_t;
      |                                 ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:543:38: error: 'size_t' was not declared in this scope; did you mean 'std::size_t'?
  543 | extern void *calloc (size_t __nmemb, size_t __size)
      |                                      ^~~~~~
      |                                      std::size_t
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/x86_64-unknown-linux-gnu/bits/c++config.h:298:33: note: 'std::size_t' declared here
  298 |   typedef __SIZE_TYPE__         size_t;
      |                                 ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:543:51: error: expression list treated as compound expression in initializer [-fpermissive]
  543 | extern void *calloc (size_t __nmemb, size_t __size)
      |                                                   ^
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:551:36: error: 'size_t' has not been declared
  551 | extern void *realloc (void *__ptr, size_t __size)
      |                                    ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:563:41: error: 'size_t' has not been declared
  563 | extern void *reallocarray (void *__ptr, size_t __nmemb, size_t __size)
      |                                         ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:563:57: error: 'size_t' has not been declared
  563 | extern void *reallocarray (void *__ptr, size_t __nmemb, size_t __size)
      |                                                         ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:569:41: error: 'size_t' has not been declared
  569 | extern void *reallocarray (void *__ptr, size_t __nmemb, size_t __size)
      |                                         ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:569:57: error: 'size_t' has not been declared
  569 | extern void *reallocarray (void *__ptr, size_t __nmemb, size_t __size)
      |                                                         ^~~~~~
In file included from /nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:574:
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/alloca.h:32:22: error: 'size_t' was not declared in this scope; did you mean 'std::size_t'?
   32 | extern void *alloca (size_t __size) __THROW;
      |                      ^~~~~~
      |                      std::size_t
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/x86_64-unknown-linux-gnu/bits/c++config.h:298:33: note: 'std::size_t' declared here
  298 |   typedef __SIZE_TYPE__         size_t;
      |                                 ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:580:22: error: 'size_t' was not declared in this scope; did you mean 'std::size_t'?
  580 | extern void *valloc (size_t __size) __THROW __attribute_malloc__
      |                      ^~~~~~
      |                      std::size_t
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/x86_64-unknown-linux-gnu/bits/c++config.h:298:33: note: 'std::size_t' declared here
  298 |   typedef __SIZE_TYPE__         size_t;
      |                                 ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:586:45: error: 'size_t' has not been declared
  586 | extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size)
      |                                             ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:586:65: error: 'size_t' has not been declared
  586 | extern int posix_memalign (void **__memptr, size_t __alignment, size_t __size)
      |                                                                 ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:592:29: error: 'size_t' was not declared in this scope; did you mean 'std::size_t'?
  592 | extern void *aligned_alloc (size_t __alignment, size_t __size)
      |                             ^~~~~~
      |                             std::size_t
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/x86_64-unknown-linux-gnu/bits/c++config.h:298:33: note: 'std::size_t' declared here
  298 |   typedef __SIZE_TYPE__         size_t;
      |                                 ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:592:49: error: 'size_t' was not declared in this scope; did you mean 'std::size_t'?
  592 | extern void *aligned_alloc (size_t __alignment, size_t __size)
      |                                                 ^~~~~~
      |                                                 std::size_t
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/x86_64-unknown-linux-gnu/bits/c++config.h:298:33: note: 'std::size_t' declared here
  298 |   typedef __SIZE_TYPE__         size_t;
      |                                 ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:592:62: error: expression list treated as compound expression in initializer [-fpermissive]
  592 | extern void *aligned_alloc (size_t __alignment, size_t __size)
      |                                                              ^
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:829:23: error: 'size_t' has not been declared
  829 |                       size_t __nmemb, size_t __size, __compar_fn_t __compar)
      |                       ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:829:39: error: 'size_t' has not been declared
  829 |                       size_t __nmemb, size_t __size, __compar_fn_t __compar)
      |                                       ^~~~~~
In file included from /nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:833:
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/bits/stdlib-bsearch.h:20:49: error: 'size_t' has not been declared
   20 | bsearch (const void *__key, const void *__base, size_t __nmemb, size_t __size,
      |                                                 ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/bits/stdlib-bsearch.h:20:65: error: 'size_t' has not been declared
   20 | bsearch (const void *__key, const void *__base, size_t __nmemb, size_t __size,
      |                                                                 ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/bits/stdlib-bsearch.h: In function 'void* bsearch(const void*, const void*, int, int, __compar_fn_t)':
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/bits/stdlib-bsearch.h:23:3: error: 'size_t' was not declared in this scope; did you mean 'std::size_t'?
   23 |   size_t __l, __u, __idx;
      |   ^~~~~~
      |   std::size_t
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/x86_64-unknown-linux-gnu/bits/c++config.h:298:33: note: 'std::size_t' declared here
  298 |   typedef __SIZE_TYPE__         size_t;
      |                                 ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/bits/stdlib-bsearch.h:27:3: error: '__l' was not declared in this scope; did you mean '__p'?
   27 |   __l = 0;
      |   ^~~
      |   __p
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/bits/stdlib-bsearch.h:28:3: error: '__u' was not declared in this scope; did you mean '__p'?
   28 |   __u = __nmemb;
      |   ^~~
      |   __p
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/bits/stdlib-bsearch.h:31:7: error: '__idx' was not declared in this scope; did you mean '__id_t'?
   31 |       __idx = (__l + __u) / 2;
      |       ^~~~~
      |       __id_t
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h: At global scope:
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:838:34: error: 'size_t' has not been declared
  838 | extern void qsort (void *__base, size_t __nmemb, size_t __size,
      |                                  ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:838:50: error: 'size_t' has not been declared
  838 | extern void qsort (void *__base, size_t __nmemb, size_t __size,
      |                                                  ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:841:36: error: 'size_t' has not been declared
  841 | extern void qsort_r (void *__base, size_t __nmemb, size_t __size,
      |                                    ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:841:52: error: 'size_t' has not been declared
  841 | extern void qsort_r (void *__base, size_t __nmemb, size_t __size,
      |                                                    ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:912:20: error: 'size_t' has not been declared
  912 |                    size_t __len) __THROW __nonnull ((3, 4, 5));
      |                    ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:915:20: error: 'size_t' has not been declared
  915 |                    size_t __len) __THROW __nonnull ((3, 4, 5));
      |                    ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:919:45: error: 'size_t' has not been declared
  919 |                     char *__restrict __buf, size_t __len)
      |                                             ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:923:45: error: 'size_t' has not been declared
  923 |                     char *__restrict __buf, size_t __len)
      |                                             ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:930:36: error: 'size_t' has not been declared
  930 | extern int mblen (const char *__s, size_t __n) __THROW;
      |                                    ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:934:48: error: 'size_t' has not been declared
  934 |                    const char *__restrict __s, size_t __n) __THROW;
      |                                                ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:941:8: error: 'size_t' does not name a type
  941 | extern size_t mbstowcs (wchar_t *__restrict  __pwcs,
      |        ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:941:8: note: 'size_t' is defined in header '<cstddef>'; did you forget to '#include <cstddef>'?
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:945:8: error: 'size_t' does not name a type
  945 | extern size_t wcstombs (char *__restrict __s,
      |        ^~~~~~
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:945:8: note: 'size_t' is defined in header '<cstddef>'; did you forget to '#include <cstddef>'?
/nix/store/1zsc48wwlplpkzms83m7zr94xnfalq2q-glibc-2.35-224-dev/include/stdlib.h:1002:46: error: 'size_t' has not been declared
 1002 | extern int ptsname_r (int __fd, char *__buf, size_t __buflen)
      |                                              ^~~~~~
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/cstdlib:154:11: error: 'mbstowcs' has not been declared in '::'
  154 |   using ::mbstowcs;
      |           ^~~~~~~~
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/cstdlib:171:11: error: 'wcstombs' has not been declared in '::'
  171 |   using ::wcstombs;
      |           ^~~~~~~~
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/stdlib.h:68:12: error: 'mbstowcs' has not been declared in 'std'
   68 | using std::mbstowcs;
      |            ^~~~~~~~
/nix/store/zzjv1aqla1y9vzn1m1w6qbclacqg9x08-gcc/include/c++/12.2.0/stdlib.h:80:12: error: 'wcstombs' has not been declared in 'std'
   80 | using std::wcstombs;
      |            ^~~~~~~~
foo.cc: In function 'int main()':
foo.cc:7:9: error: 'cin' was not declared in this scope
    7 |         cin >> n >> m;
      |         ^~~
foo.cc:4:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    3 | #include<stdlib.h>
  +++ |+#include <iostream>
    4 | using namespace std;
foo.cc:8:17: error: 'memset' was not declared in this scope
    8 |                 memset(w, 0, sizeof(w));
      |                 ^~~~~~
foo.cc:4:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    3 | #include<stdlib.h>
  +++ |+#include <cstring>
    4 | using namespace std;
foo.cc:21:17: error: 'cout' was not declared in this scope
   21 |                 cout << max << endl;
      |                 ^~~~
foo.cc:21:17: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
foo.cc:21:32: error: 'endl' was not declared in this scope
   21 |                 cout << max << endl;
      |                                ^~~~
foo.cc:4:1: note: 'std::endl' is defined in header '<ostream>'; did you forget to '#include <ostream>'?
    3 | #include<stdlib.h>
  +++ |+#include <ostream>
    4 | using namespace std;

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