Program tt;

Var a:array [1..100] of integer;

      N,B:integer;

Begin

 Read(n);

For i:=1 ton do

    Read(a[i]);

B:=a[1];

A[1]:=a[2];

A[2]:=b;

B:=a[n];

A[n]:=a[n-1];

A[n-1]:=b;

For i:=1 ton do

    write(a[i],’,’);

End.