foo.c: In function 'Match':
foo.c:35:5: warning: 'main' is normally a non-static function [-Wmain]
   35 | int main()
      |     ^~~~
foo.c: In function 'main':
foo.c:38:14: error: conflicting types for 's'; have 'char[200000]'
   38 |         char s[200000];
      |              ^
foo.c:37:14: note: previous declaration of 's' with type 'char[100000]'
   37 |         char s[100000];
      |              ^
foo.c: In function 'Match':
foo.c:47:1: error: expected declaration or statement at end of input
   47 | }
      | ^
foo.c: At top level:
foo.c:35:5: warning: 'main' defined but not used [-Wunused-function]
   35 | int main()
      |     ^~~~

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