View Compilation Error

0_0_39634648_23758.cpp: In function 'int main()':
0_0_39634648_23758.cpp:47:20: error: 'get_sg' was not declared in this scope; did you mean 'get_s'?
   47 |             sum ^= get_sg(s, c);
      |                    ^~~~~~
      |                    get_s