View Compilation Error

0_0_39073820_11228.cpp: In function 'int main()':
0_0_39073820_11228.cpp:91:17: error: 'sort' was not declared in this scope; did you mean 'short'?
   91 |                 sort(a+1,a+n+1,cmp);
      |                 ^~~~
      |                 short