#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e9+7;
const ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ll,ii>
#define id pair<ll,vector<ll> >
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
#include "tree.h"
int n;
long long leaf = 0;
std::vector<int> p, w;
vector<vector<int> >adj;
void init(std::vector<int> P, std::vector<int> W) {
p = P;
w = W;
n = (int)p.size();
adj.assign(n+5,vector<int>());
f(i,1,n){
adj[i].pb(p[i]);
adj[p[i]].pb(i);
}
f(i,0,n){
if(adj[i].size() == 1){
leaf++;
}
}
}
long long query(int L, int R){
if(leaf * L <= R){
return 1LL * leaf * L;
}
return 2LL * leaf * L - R;
}
