View Compilation Error

0_0_39865259_30744.cpp:16:55: error: stray '\23' in program
   16 |                                 for(int j=i-1;j>=a1;j <U+0013>){
      |                                                       ^~~~~~~~
0_0_39865259_30744.cpp: In function 'int main()':
0_0_39865259_30744.cpp:20:33: error: 'al' was not declared in this scope; did you mean 'a1'?
   20 |                                 al=i+1;
      |                                 ^~
      |                                 a1