/in/foo.cc:15:1: error: 'll' does not name a type
 ll ans=1;
 ^~
/in/foo.cc: In function 'void process(int)':
/in/foo.cc:41:2: error: 'ans' was not declared in this scope
  ans=(ans*(ll)ret)%mod;
  ^~~
/in/foo.cc:41:12: error: 'll' was not declared in this scope
  ans=(ans*(ll)ret)%mod;
            ^~
/in/foo.cc:41:15: error: expected ')' before 'ret'
  ans=(ans*(ll)ret)%mod;
               ^~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:72:8: error: 'ans' was not declared in this scope
  cout<<ans;
        ^~~