/in/foo.cc: In function 'int main()':
/in/foo.cc:13:31: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
 #define prt(x) printf("%d\n",x)
                               ^
/in/foo.cc:124:3: note: in expansion of macro 'prt'
   prt(search(1,l,r));
   ^~~