//////////////////कर्मण्येवाधिकारस्ते मा फलेषु कदाचन।////////////////////
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
using ll= long long;
#define f(i,n) for(int i=0;i<n;i++)
#define sorted(x) sort(x.begin(),x.end());
#define rsorted(x) sort(x.rbegin(),x.rend());
#define rev(x) reverse(x.begin(),x.end());
#define F first
#define S second
typedef vector<int> vi;
typedef vector<long long> vll;
typedef vector<vi> vvi;
typedef vector<vll> vvll;
typedef pair<int, int> pii;
typedef vector<pair<int, int>> vpii;
typedef unordered_map<int, int> umap_ii;
typedef unordered_map<ll, ll> umap_ll;
typedef unordered_map<string, int> umap_si;
const int mod=1000000007;

int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
   int n;
   cin>>n;
   cout<<0<<endl;
    return 0;
}