View Compilation Error

0_0_17664431_6361.cpp:109:10: error: redefinition of 'const ll mod'
 const ll mod=1000000007;
          ^
0_0_17664431_6361.cpp:26:10: note: 'const ll mod' previously defined here
 const ll mod=1000000007;
          ^
0_0_17664431_6361.cpp:110:13: error: conflicting declaration 'int sg [1048576]'
 int sg[1<<20];
             ^
0_0_17664431_6361.cpp:27:5: note: previous declaration as 'int sg [2097152]'
 int sg[1<<21];
     ^
0_0_17664431_6361.cpp: In function 'int get(int)':
0_0_17664431_6361.cpp:112:5: error: redefinition of 'int get(int)'
 int get(int x)
     ^
0_0_17664431_6361.cpp:29:5: note: 'int get(int)' previously defined here
 int get(int x)
     ^
0_0_17664431_6361.cpp: In function 'int main()':
0_0_17664431_6361.cpp:144:5: error: redefinition of 'int main()'
 int main()
     ^
0_0_17664431_6361.cpp:60:5: note: 'int main()' previously defined here
 int main()
     ^