import std.algorithm;
import std.array;
import std.ascii;
import std.bigint;
import std.complex;
import std.container;
import std.conv;
import std.functional;
import std.math;
import std.range;
import std.stdio;
import std.string;
import std.typecons;

auto readInts() {
	return array(map!(to!int)(readln().strip().split()));
}
auto readInt() {
	return readInts()[0];
}
auto readLongs() {
	return array(map!(to!long)(readln().strip().split()));
}
auto readLong() {
	return readLongs()[0];
}

void readlnTo(T...)(ref T t) {
    auto s = readln().split();
    assert(s.length == t.length);
    foreach(ref ti; t) {
        ti = s[0].to!(typeof(ti));
        s = s[1..$];
    }
}

const real eps = 1e-10;

void main(){
    long n, k;
    readlnTo(n, k);
    auto a = readLongs();
    foreach(ref ai; a) {
        --ai;
    }

    long count;
    if(a[0] != 0) {
        ++count;
        a[0] = 0;
    }
    long calc(long i) {
        if(a[i.to!uint] == 0) {
            return 1;
        }
        auto ans = memoize!calc(a[i.to!uint]) + 1;
        if(ans > k) {
            a[i.to!uint] = 0;
            ans = 1;
            ++count;
        }
        return ans;
    }
    foreach(i; iota(n)) {
        memoize!calc(i);
    }
    writeln(count);
}

