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Linux tsuru-no-tsurugi 5.15.0-186-generic #196-Ubuntu SMP Sat Jun 20 16:09:34 UTC 2026 x86_64
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Name	Size	Permission	Date
a.cpp	1.1 KB	-rwxr-x---	2024-08-28 22:35
cerror.txt	0 B	-rwxr-x---	2024-08-28 22:35
error.txt	0 B	-rwxr-x---	2024-08-28 22:35
submit_info.txt	178 B	-rwxr-x---	2024-08-28 22:35

Rename

#include<bits/stdc++.h>
using namespace std;
using ll = long long;

int main(){ 
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    
    ll n,m,x,p;
    cin>>n>>m>>x>>p;
    vector<ll> b(n),t(m);
    vector<int> vis(m,0);
    for(int i = 0;i<n;i++) cin>>b[i];
    for(int i = 0;i<m;i++) cin>>t[i];
    vector<int> need(m,0);
    for(int i = 0;i<n;i++) for(int j = 0;j<m;j++) if(abs(b[i]-t[j])<=p) need[j] = 1;
    int ans = 0;
    vector<vector<int>> g(m);
    for(int i = 0;i<x;i++){
        int u,v;
        cin>>u>>v;
        u--;v--;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    for(int i = 0;i<m;i++){
        if(vis[i]) continue;
        bool use = false;
        vector<int> que;
        que.push_back(i);
        vis[i]++;
        for(int j = 0;j<que.size();j++){
            int ni = que[j];
            if(need[ni]) use = 1;
            for(auto&to:g[ni]){
                if(vis[to]) continue;
                vis[to]++;
                que.push_back(to);
            }
        }
        if(use) ans++;
    }
    cout<<ans<<endl;

}