foo.cc:4:6: error: 'N' was not declared in this scope
    4 | LL a[N],n,ans;
      |      ^
foo.cc: In function 'int main()':
foo.cc:7:27: error: 'a' was not declared in this scope
    7 |  for(LL i=1;i<=n;i++)cin>>a[i];
      |                           ^
foo.cc:11:9: error: 'a' was not declared in this scope
   11 |    sum+=a[j];
      |         ^

Found 10 testcases.
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