// noi 2023 final round #include <bits/stdc++.h> using namespace std; #define ll long long #define vi vector<long long> #define all(x) x.begin(), x.end() #define endl "\n" void solution(); int main(){ ios::sync_with_stdio(false); cin.tie(nullptr); solution(); return 0; } void solution() { ll n, k; cin >> n >> k; for (int i = 0; i < k; i++) { ll x; cin >> x; if (x > 0) {cout << 0 << endl; return;} } cout << 1 << endl; }