View Compilation Error

0_0_22274366_4543.cpp:38:3: error: expected unqualified-id before '/' token
 }*/
   ^
0_0_22274366_4543.cpp:38:3: error: expected constructor, destructor, or type conversion before '/' token
0_0_22274366_4543.cpp:42:10: error: conflicting declaration 'const ll mod'
 const ll mod = 1e9+7;
          ^
0_0_22274366_4543.cpp:4:11: note: previous declaration as 'const int mod'
 const int mod = 1e9+7;
           ^
0_0_22274366_4543.cpp: In function 'int main()':
0_0_22274366_4543.cpp:83:5: error: redefinition of 'int main()'
 int main()
     ^
0_0_22274366_4543.cpp:27:5: note: 'int main()' previously defined here
 int main()
     ^