#include "elephants.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pair<int,int>> vpi;
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)
#define pb push_back
#define rsz resize
#define sz(x) int(x.size())
#define all(x) begin(x), end(x)
#define fi first
#define se second
int N;
int L;
int X[2];
void init(int N1, int L1, int X1[])
{
L=L1;
N = N1;
F0R(i,N)
{
X[i]=X1[i];
}
}
int update(int i, int y)
{
X[i]=y;
if(abs(X[1]-X[0])<=L)
{
return 1;
}
else
{
return 0;
}
}
