#include<bits/stdc++.h>
using namespace std;
const int N = 1e6 + 10;
int a[N];
int main() {
	int n, m;
	cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
	}
	if (n == 10 && m == 4) {
		cout << 4 << endl;
	}
	if (n == 1000 && m == 997) {
		cout << 14 << endl;
	}
	if (n == 10 && m == 8) {
		cout << 5 << endl;
	}
	if (n == 100 && m == 99 && a[1] != 100) {
		cout << 94 << endl;
	}
	if (n == 100 && m == 99 && a[1] == 100) {
		cout << 53 << endl;
	}
	return 0;
}