rt，WA on #5 #6 #7。dis已经开了ull仍WA。

#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;

const int N=1e3+5;

ll n,h,r,x[N],y[N],z[N],fa[N];
set<int> buttom,top;

ll gf(int x){
    if(fa[x]==x) return x;
    return fa[x]=gf(fa[x]);
}

ull dis(ll xa,ll ya,ll za,ll xb,ll yb,ll zb){
    return ceil(sqrt((xa-xb)*(xa-xb)+(ya-yb)*(ya-yb)+(za-zb)*(za-zb)));
}

void solve(){
    buttom.clear();
    top.clear();
    memset(x,0,sizeof(x));
    memset(y,0,sizeof(y));
    memset(z,0,sizeof(z));
    cin>>n>>h>>r;
    for(int i=1;i<=n;i++) cin>>x[i]>>y[i]>>z[i];
    for(int i=1;i<=n;i++) fa[i]=i;
    for(int i=1;i<=n;i++){
        for(int j=i+1;j<=n;j++){
            if(dis(x[i],y[i],z[i],x[j],y[j],z[j])<=2*r){
                ll fx=gf(i),fy=gf(j);
                fa[fx]=fy;
            }
        }
    }
    for(int i=1;i<=n;i++){
        if(z[i]-r<=0) buttom.insert(fa[i]);
        if(z[i]+r>=h) top.insert(fa[i]);
        if(buttom.count(fa[i])&&top.count(fa[i])){
            cout<<"Yes"<<endl;
            return;
        }
    }
    cout<<"No"<<endl;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    int T;
    cin>>T;
    while(T--){
        solve();
    }
    return 0;
}