# include <bits/stdc++.h>
# define FILE
using namespace std;

const int N = 300015;

int n, k, ans = 0, p[N], deep[N], lc[N];
int tree[4*N], ver[4*N];
vector < int > gr[N];

void update( int x, int val, int tl = 1, int tr = n, int td = 1 ){
    if( tl > tr || x > tr || tl > x ) return;
    if( tl == tr ){
        tree[td] = val;
        ver[td] = x;
    }
    else{
        int tm = ( tl+tr )>> 1;
        update( x, val, tl, tm, td+td );
        update( x, val, tm+1, tr, td+td+1 );
        if( tree[td+td] > tree[td+td+1] ){
            tree[td] = tree[td+td];
            ver[td] = ver[td+td];
        }
        else{
            tree[td] = tree[td+td+1];
            ver[td] = ver[td+td+1];
        }
    }
}
void dfs1( int v, int f ){
    deep[v] = deep[f] + 1;
    update( v,deep[v] );
    for( auto to: gr[v] ){
        if( to != v ){
            dfs1( to, v );
        }
    }
}
void dfs2( int v, int f ){
    if( lc[v] ) return;
    lc[v] = 1;
    deep[v] = 0;
    update( v,deep[v] );
    for( auto to: gr[v] ){
        if( to != f ){
            dfs1( to, v );
        }
    }
    dfs2( p[v], v );
}

int main(){

    # ifdef FILEs
        freopen( "input.txt", "r", stdin );
        freopen( "output.txt", "w", stdout );
    # endif
    ios_base::sync_with_stdio( false );
    cin >> n >> k;
    for( int i = 2; i <= n; i++ ){
        cin >> p[i];
        gr[p[i]].push_back( i );
    }
    lc[0] = 1;
    deep[0] = 0;
    dfs1( 1,0 );
    int cnt = 0;

    for( int i = 1; i <= n; i++ ){
        if( gr[i].size() == 0 )cnt++;
    }

    k = min( k, cnt );
    for(; k > 0; k -- ){
        if( tree[1] == 1 ){
            break;
        }
        ans += tree[1];
        dfs2( ver[1], -1 );
    }
    ans += k;
    cout << ans;
}