#include "cmp.h" #include <bits/stdc++.h> void remember(int n) { n += 4096; while(n) { bit_set(n); n >>= 3; } } int compare(int b) { b += 4096; for(int lvl = 4; ~lvl; --lvl) { int node = b >> (lvl * 3); if(!bit_get(node)) { int d = node % 8; if(d <= 2) return -1; if(d >= 5) return 1; if(d == 3) return bit_get(node) ? 1 : -1; else return bit_get(node + 7) ? -1 : 1; } } }

cmp.cpp: In function 'int compare(int)':
cmp.cpp:26:1: warning: control reaches end of non-void function [-Wreturn-type]
   26 | }
      | ^