foo.cc: In function ‘int main()’:
foo.cc:14:13: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[10010]’ [-Wformat=]
   14 |     scanf("%s",&a);
      |            ~^  ~~
      |             |  |
      |             |  char (*)[10010]
      |             char*