#include using namespace std; #define int long long #define REP(i,m,n) for(int i=(m);i<(n);i++) #define rep(i,n) REP(i,0,n) #define pb push_back #define all(a) a.begin(),a.end() #define rall(c) (c).rbegin(),(c).rend() #define mp make_pair #define endl '\n' #define vec vector #define mat vector > #define fi first #define se second typedef long long ll; typedef unsigned long long ull; typedef pair pll; typedef long double ld; typedef complex comp; const ll inf=1e9+7; const ll mod=2e5+3; const int MAX=1000010; int siz[200010]; int par[200010]; int depth[200010]; void init(int n){ for(int i=0;i<=n;i++){ par[i]=i; depth[i]=0; } rep(i,n+1){ siz[i]=1; } } int root(int x){ return par[x]==x?x:par[x]=root(par[x]); } bool same(int x,int y){ return root(x)==root(y); } void unite(int x,int y){ x=root(x); y=root(y); ll sx=siz[x]; ll sy=siz[y]; if(x==y)return; if(depth[x]>n>>a>>b; vectorx(n); vectorc(n); init(n); rep(i,n)cin>>x[i]; x.pb(inf); rep(i,n){ ll l=lower_bound(all(x),x[i]+a)-x.begin(); ll r=upper_bound(all(x),x[i]+b)-x.begin(); if(r==l)continue; if(l=0&&r