#include "cmp.h" #include <bits/stdc++.h> void remember(int n) { n += 4096; while(n) { bit_set(n); n >>= 2; } } int compare(int b) { b += 4096; for(int lvl = 5; ~lvl; --lvl) { int node = b >> (lvl * 2); if(!bit_get(node)) { int d = node % 4; if(!d) return -1; if(d == 3) return 1; if(d == 2) return bit_get(node + 3) ? -1 : 1; else return bit_get(node) ? 1 : -1; } } return 0; }