/in/foo.cc:3:7: error: conflicting declaration 'int a [100005]'
    3 | int a,a[100005],b[100005],x=1,cnt;
      |       ^
/in/foo.cc:3:5: note: previous declaration as 'int a'
    3 | int a,a[100005],b[100005],x=1,cnt;
      |     ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:6:14: error: 'n' was not declared in this scope; did you mean 'yn'?
    6 |         cin>>n;
      |              ^
      |              yn
/in/foo.cc:8:23: error: invalid types 'int[int]' for array subscript
    8 |                 cin>>a[i];
      |                       ^
/in/foo.cc:12:16: error: 'i' was not declared in this scope
   12 |         sort(b+i;b+n+1);
      |                ^
/in/foo.cc:15:21: error: invalid types 'int[int]' for array subscript
   15 |                 if(a[i]>b[x])
      |                     ^