/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:49:26: error: 'r' was not declared in this scope
  ne=InterSet(a,n,  b,g,  r);
                          ^