/in/foo.cc: In function 'int main()':
/in/foo.cc:9:11: error: invalid types 'int[int]' for array subscript
   cin>>a[i];
           ^
/in/foo.cc:10:9: error: invalid types 'int[int]' for array subscript
   if(a[i]>x)
         ^
/in/foo.cc:11:9: error: invalid types 'int[int]' for array subscript
    x=a[i];
         ^
/in/foo.cc:12:9: error: invalid types 'int[int]' for array subscript
   if(a[i]<y)
         ^
/in/foo.cc:13:9: error: invalid types 'int[int]' for array subscript
    y=a[i];
         ^
/in/foo.cc:17:9: error: invalid types 'int[int]' for array subscript
   if(a[i]<k)
         ^
/in/foo.cc:18:7: error: invalid types 'int[int]' for array subscript
    a[i]=y;
       ^
/in/foo.cc:19:9: error: invalid types 'int[int]' for array subscript
   if(a[i]>k)
         ^
/in/foo.cc:20:7: error: invalid types 'int[int]' for array subscript
    a[i]=x;
       ^
/in/foo.cc:21:12: error: invalid types 'int[int]' for array subscript
   cout<<a[i];
            ^