/in/foo.cc: In function 'int main()':
/in/foo.cc:16:10: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
    j=1<<d-1;
         ~^~
/in/foo.cc:6:34: warning: unused variable 'k' [-Wunused-variable]
  register int n,m,i,d,endd,j,MAX,k;
                                  ^
/in/foo.cc:6:30: warning: 'MAX' may be used uninitialized in this function [-Wmaybe-uninitialized]
  register int n,m,i,d,endd,j,MAX,k;
                              ^~~