View Compilation Error

0_0_33823633_25259.cpp: In function 'int main()':
0_0_33823633_25259.cpp:66:13: error: invalid types 'long long int[int]' for array subscript
   ans=(ans[n]%mod+mod)%mod;
             ^
0_0_33823633_25259.cpp:67:14: error: invalid types 'long long int[int]' for array subscript
   cout<<ans[n]<<"\n";
              ^