///In the name of GOD
#pragma GCC optimize("O2")
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll MXN = 2e5 + 10;
ll n, m, ans;
ll h[MXN], dis[MXN];
vector<ll> adj[MXN], Ver;
void DFS(ll u, ll par, ll d){
if(d >= m || d >= dis[u]) return;
dis[u] = d;
for(auto v : adj[u]){
if(v != par) DFS(v, u, d + 1);
}
}
void dfs(ll u, ll par){
Ver.push_back(u);
for(auto v : adj[u]){
if(v != par){
h[v] = h[u] + 1;
dfs(v, u);
}
}
}
int main(){
ios::sync_with_stdio(0);cin.tie(0); cout.tie(0);
memset(dis, 63, sizeof dis);
cin >> n >> m;
for(int i = 2; i <= n; i ++){
ll x; cin >> x, x ++;
adj[i].push_back(x), adj[x].push_back(i);
}
dfs(1, 0);
sort(Ver.begin(), Ver.end(), [&](const int& u, const int &v){
return h[u] > h[v];
});
for(auto u : Ver){
if(dis[u] < m) continue;
ans ++;
DFS(u, 0, 0);
}
cout << ans << '\n';
return 0;
}
/*!
HE'S AN INSTIGATOR,
ENEMY ELIMINATOR,
AND WHEN HE KNOCKS YOU BETTER
YOU BETTER LET HIM IN.
*/
//! N.N
