/in/foo.cc: In function 'int main()':
/in/foo.cc:14:9: error: invalid types 'int[int]' for array subscript
   if(a[k]==47)return 0;
         ^
/in/foo.cc:15:13: error: 'k' was not declared in this scope
  sort(mp,mp+k,cmp);
             ^