View Compilation Error

0_0_39305073_30998.cpp:4:13: error: expected initializer before 'unsigned'
    4 | #define ull unsigned long long
      |             ^~~~~~~~
0_0_39305073_30998.cpp:8:9: note: in expansion of macro 'ull'
    8 |         ull ha[N],hs;
      |         ^~~
0_0_39305073_30998.cpp: In function 'void solve()':
0_0_39305073_30998.cpp:12:9: error: 'hs' was not declared in this scope
   12 |         hs=0;
      |         ^~
0_0_39305073_30998.cpp:20:17: error: 'ha' was not declared in this scope; did you mean 'la'?
   20 |                 ha[i]=ha[i-1]*d+a[i];
      |                 ^~
      |                 la
0_0_39305073_30998.cpp:24:22: error: 's' was not declared in this scope
   24 |                 cin>>s[i];
      |                      ^
0_0_39305073_30998.cpp:31:20: error: 'ha' was not declared in this scope; did you mean 'la'?
   31 |                 if(ha[i]-ha[i-ls]*pow1==hs)
      |                    ^~
      |                    la