#include "migrations.h" #include <bits/stdc++.h> #include <cassert> #include <cstdio> using namespace std; int depth[10005]; int mx = 0; int id = -1; int k, l; int send_message(int N, int i, int Pi) { depth[i] = depth[Pi] + 1; if(mx < depth[i]) { mx = depth[i]; id = i; } if(i <= N - 20) { k = mx; if(i == N - 20) return 3; return 0; } else { if(mx > k) { k = mx; return 2; } else { // if(l == 0) return 3; int b = l % 2; l = l / 2; return b; } } } std::pair<int, int> longest_path(std::vector<int> S) { // return {0, S.back()}; int res = 0; for(int i = S.size() - 1; i >= 0; i--) { if(S[i] == 2) { return {0, i}; } } for(int i = S.size() - 1; i >= 0; i--) { if(S[i] == 3) break; res = res * 2 + S[i]; } return {0, res}; }