View Compilation Error

0_0_38923636_8907.cpp: In function 'int main()':
0_0_38923636_8907.cpp:23:17: error: 'sort' was not declared in this scope; did you mean 'sqrt'?
   23 |                 sort(mi+1, mi + n+1,cmp);
      |                 ^~~~
      |                 sqrt