View Compilation Error

0_0_38932154_23537.cpp: In function 'int main()':
0_0_38932154_23537.cpp:13:29: error: expected primary-expression before '<' token
   13 |                 sort(a,a+n);<span style="white-space:pre">              </span>//排序
      |                             ^
0_0_38932154_23537.cpp:13:30: error: 'span' was not declared in this scope
   13 |                 sort(a,a+n);<span style="white-space:pre">              </span>//排序
      |                              ^~~~
0_0_38932154_23537.cpp:3:1: note: 'std::span' is defined in header '<span>'; did you forget to '#include <span>'?
    2 | #include<algorithm>
  +++ |+#include <span>
    3 | using namespace std;
0_0_38932154_23537.cpp:14:32: error: expected ';' before ')' token
   14 |                 for(i=0;i<m;i++)
      |                                ^
      |                                ;
0_0_38932154_23537.cpp:16:29: error: expected primary-expression before '<' token
   16 |                 sort(b,b+m);<span style="white-space:pre">              </span>//排序
      |                             ^
0_0_38932154_23537.cpp:17:32: error: expected ';' before ')' token
   17 |                 for(i=0;i<n;i++)
      |                                ^
      |                                ;