foo.c: In function 'main':
foo.c:44:17: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long long int *' [-Wformat=]
   44 |         scanf("%d",&n);
      |                ~^  ~~
      |                 |  |
      |                 |  long long int *
      |                 int *
      |                %lld
foo.c:59:13: warning: 'sum' may be used uninitialized [-Wmaybe-uninitialized]
   59 |         int arr0[sum];
      |             ^~~~
foo.c:46:13: note: 'sum' was declared here
   46 |         int sum;
      |             ^~~

[Hydro](https://hydro.ac)提供评测服务