#include <iostream>
#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using vi=vector<int>;
using vll=vector<ll>;
using P=pair<ll,ll>;
#define OVERLOAD_REP(_1, _2, _3, name, ...) name
# define rep1(i, n) for (auto i = 0; i < (n); i++)
# define rep2(i,start,end) for (auto i=(start);i<(end);i++)
#define rep(...) OVERLOAD_REP(__VA_ARGS__, rep2, rep1)(__VA_ARGS__)
#define PRINTEXIT(value) { cout << value << endl; return 0; }
#define all(a) (a).begin(), (a).end()    // sort(all(a))
#define bit(x,i)(((x)>>(i))&1) // i(0~)番目のビット

#ifdef LOCAL
#  include <debug_print.hpp>
#  define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define debug(...) (static_cast<void>(0))
#endif

template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }

int dx[4]={1,0,-1,0};
int dy[4]={0,1,0,-1};

const ll MOD=1000000007;
const ll MOD2=998244353;

int main() {
    cout<<0<<endl;

    return 0;
}