#include "migrations.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> dist;
int md = 0;
int send_message(int n, int i, int pi) {
if (i == 1) {
dist.resize(n);
dist[0] = 0;
}
dist[i] = dist[pi] + 1;
md = max(md, dist[i]);
if (dist[i] < md) return 0;
return 1;
}
pair<int, int> longest_path(vector<int> s) {
int u = 0, v;
for (int i = 0; i < s.size(); i++) {
if (s[i] == 1) v = i + 1;
}
return {u, v};
}
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