/**
* In the name of Allah
* We are nothing and you're everything
* Ya Muhammad!
**/
#include <bits/stdc++.h>
#include "migrations.h"
using namespace std;
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
#define mp(x, y) make_pair(x, y)
const char nl = '\n';
const int N = 1e4+5;
int a[N], cnt = 1, mx = 0, id = 0, gos = 0, was = 0;
int send_message(int n, int i, int pi) {
a[i] = a[pi]+1;
cnt += 1;
if (mx<a[i])gos += i-was, mx = a[i], was = i;
if (cnt == n) {
if (gos==211)return 211;
if (gos==-211)return 212;
if (gos>0)return 215+gos;
if (gos<0)return 211+gos;
}
if (gos >= 211) {
gos -= 211;
was = i;
return 211;
}
if (gos <=-211) {
gos += 211;
was = i;
return 212;
}
return 0;
}
std::pair<int, int> longest_path(std::vector<int> s) {
memset(a, 0, sizeof a);
cnt = 1, mx = 0, id = 0, gos = was = 0;
int res = 0;
for (int i = 1; i < sz(s); ++i) {
if (s[i] == 0)continue;
if (s[i] == 211)res += 211;
else if (s[i] == 212)res -= 212;
else if (s[i]>215)res = res+s[i]-215;
else res = res+s[i]-211;
}
return {0, res};
}
