#include <bits/stdc++.h> using namespace std; const int MAXN = 925; static int s[MAXN]; void build_encoder(){ int cnt = 0; for(int mask=0; mask<(1 << 12); mask++){ if(__builtin_popcount(mask) != 6) continue; s[++cnt] = mask; } } static bool first_time = true; int encode(int n, int x, int y){ if(first_time){ build_encoder(); first_time = false; } for(int i=0; i<12; i++){ if(s[x] & (1 << i) && !(s[y] & (1 << i))){ return i + 1; } } return 0; }

#include <bits/stdc++.h> using namespace std; const int MAXN = 925; static int s[MAXN]; void build_decoder(){ int cnt = 0; for(int mask=0; mask<(1 << 12); mask++){ if(__builtin_popcount(mask) != 6) continue; s[++cnt] = mask; } } static bool first_time = true; int decode(int n, int q, int h){ if(first_time){ build_decoder(); first_time = false; } h --; if(s[q] & (1 << h)) return 1; return 0; }