/in/foo.cc:4:1: error: expected ',' or ';' before 'int'
    4 | int n,p,q,a[N],b[N];
      | ^~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:6:14: error: 'n' was not declared in this scope
    6 |         cin>>n>>p>>q;
      |              ^
/in/foo.cc:6:17: error: 'p' was not declared in this scope
    6 |         cin>>n>>p>>q;
      |                 ^
/in/foo.cc:6:20: error: 'q' was not declared in this scope
    6 |         cin>>n>>p>>q;
      |                    ^
/in/foo.cc:8:22: error: 'a' was not declared in this scope
    8 |                 cin>>a[i];
      |                      ^
/in/foo.cc:9:17: error: 'b' was not declared in this scope
    9 |                 b[i]=i;
      |                 ^
/in/foo.cc:13:23: error: 'a' was not declared in this scope
   13 |                 int x=a[i],y=b[i];
      |                       ^
/in/foo.cc:14:40: error: 'y' was not declared in this scope
   14 |                 for(;(x<a[j]||a[j]==x&&y>b[j])&&j>=1;j--){
      |                                        ^
/in/foo.cc:14:42: error: 'b' was not declared in this scope
   14 |                 for(;(x<a[j]||a[j]==x&&y>b[j])&&j>=1;j--){
      |                                          ^
/in/foo.cc:18:26: error: 'b' was not declared in this scope
   18 |                 a[j+1]=x,b[j+1]=y;
      |                          ^
/in/foo.cc:18:33: error: 'y' was not declared in this scope
   18 |                 a[j+1]=x,b[j+1]=y;
      |                                 ^
/in/foo.cc:21:23: error: 'b' was not declared in this scope
   21 |                 cout<<b[i]<<' ';
      |                       ^