/in/foo.cc: In function 'int InterSet(int*, int, int*, int, int*)':
/in/foo.cc:28:21: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   if(k1=-1 && k2==-1)
                     ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:49:9: error: 'e' was not declared in this scope
  Output(e, ne);
         ^
/in/foo.cc:49:12: error: 'ne' was not declared in this scope
  Output(e, ne);
            ^~