#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define ll long long
#define rep(i,l,r)for(ll i=(l);i<(r);i++)
#define repp(i,l,r,k)for(ll i=(l);i<(r);i+=(k))
#define INF ((1LL<<62)-(1LL<<31))
#define max(p,q)((p)>(q)?(p):(q))
#define min(p,q)((p)<(q)?(p):(q))
#define bit(n,m)(((n)>>(m))&1)
int upll(const void*a, const void*b){return*(ll*)a<*(ll*)b?-1:*(ll*)a>*(ll*)b?1:0;}
int downll(const void*a, const void*b){return*(ll*)a<*(ll*)b?1:*(ll*)a>*(ll*)b?-1:0;}
void sortup(ll*a,int n){qsort(a,n,sizeof(ll),upll);}
void sortdown(ll*a,int n){qsort(a,n,sizeof(ll),downll);}
ll pom(ll a,ll n,int m){ll x=1;for(a%=m;n;n/=2)n&1?x=x*a%m:0,a=a*a%m;return x;}
//#define MOD 998244353
#define MOD 1000000007
#define invp(a,p)pom(a,p-2,p)



//*
//遅延セグ木ここから
//↓ここを変える
typedef struct sayouso{ll k;}sayouso;
typedef struct atai{ll a;}atai;
//↑ここを変える

typedef struct node{sayouso T;atai x;}node;
node *lsegN,*lseg;
ll lsegNUM,lsegk;

//↓ここから変える
sayouso sid={INF};
atai aid={INF};
atai xx(atai x,atai y){
	atai ret;
	ret.a=min(x.a,y.a);
	return ret;
}
atai Tx(sayouso T,atai x){
	atai ret;
	ret.a=min(T.k,x.a);
	return ret;
}
sayouso TT(sayouso S,sayouso T){
	sayouso ret;
	ret.k=min(S.k,T.k);
	return ret;
}
sayouso fT(sayouso T,ll k){
	sayouso ret;
	ret.k=T.k;
	return ret;
}
//↑ここまで変える

//要素数(2ベキ)でこれを呼ぶ
void lseguse(ll n){
	lsegN=(node*)calloc(2*n,sizeof(node));
	lsegNUM=n;
	lseg=lsegN+lsegNUM;
	lsegk=0;while(n/=2)lsegk++;
	rep(i,1,2*lsegNUM){
		lsegN[i].x=aid;
		lsegN[i].T=sid;
	}
}
void lsegupdatesub(ll l,ll r,sayouso T,ll i,ll cl,ll cr,ll ck){
	if(l>=r)return;
	//disjointなとき
	if(cr<=l||r<=cl)return;
	//完全に含むとき
	if(l<=cl&&cr<=r){
		lsegN[i].T=TT(T,lsegN[i].T);
		return;
	}
	//どちらでもないとき
	//遅延伝播
	lsegN[2*i  ].T=TT(lsegN[i].T,lsegN[2*i  ].T);
	lsegN[2*i+1].T=TT(lsegN[i].T,lsegN[2*i+1].T);
	//再帰的に更新
	ll cm=(cl+cr)/2;
	lsegupdatesub(l,r,T,2*i  ,cl,cm,ck-1);
	lsegupdatesub(l,r,T,2*i+1,cm,cr,ck-1);
	//自身のnodeを更新
	lsegN[i].x=xx(Tx(fT(lsegN[2*i].T,ck-1),lsegN[2*i].x),Tx(fT(lsegN[2*i+1].T,ck-1),lsegN[2*i+1].x));
	lsegN[i].T=sid;
}
void lsegupdate(ll l,ll r,sayouso T){lsegupdatesub(l,r,T,1,0,lsegNUM,lsegk);}
atai lsegcalcsub(ll l,ll r,ll i,ll cl,ll cr,ll ck){
	if(l>=r)return aid;
	//完全に含むとき
	if(l<=cl&&cr<=r)return Tx(fT(lsegN[i].T,ck),lsegN[i].x);

	ll cm=(cl+cr)/2;
	//遅延伝播(変更はないので配るだけで良い)
	lsegN[2*i  ].T=TT(lsegN[i].T,lsegN[2*i  ].T);
	lsegN[2*i+1].T=TT(lsegN[i].T,lsegN[2*i+1].T);
	lsegN[i].x=Tx(fT(lsegN[i].T,ck),lsegN[i].x);
	lsegN[i].T=sid;

	//左側だけ
	if(r<=cm)return lsegcalcsub(l,r,2*i  ,cl,cm,ck-1);
	//右側だけ
	if(cm<=l)return lsegcalcsub(l,r,2*i+1,cm,cr,ck-1);
	//両方
	return xx(lsegcalcsub(l,r,2*i,cl,cm,ck-1),lsegcalcsub(l,r,2*i+1,cm,cr,ck-1));
}
atai lsegcalc(ll l,ll r){return lsegcalcsub(l,r,1,0,lsegNUM,lsegk);}
//遅延セグ木ここまで
//*/



typedef struct edge{ll s,t,x;}E;
int uniquell(ll*a,ll*ans,int cnt){
	sortup(a,cnt);
	int c=0;
	ans[0]=a[0];
	rep(i,1,cnt)if(a[i]!=ans[c])ans[++c]=a[i];
	return c+1;
}

ll a[400010];
ll acnt;
int f(ll k){
	//a[i]<=n<a[i+1]なるiを返す
	ll l=0,r=acnt;
	while(r-l>1){
		ll m=(l+r)/2;
		if(a[m]<=k)l=m;
		else r=m;
	}
	return l;
}

E data[200010];
int main(){
	ll n,q;
	scanf("%lld%lld",&n,&q);
	rep(i,0,n){
		ll s,t,x;
		scanf("%lld%lld%lld",&s,&t,&x);
		data[i].s=s;
		data[i].t=t;
		data[i].x=x;
		a[2*i]=s-x;
		a[2*i+1]=t-x;
	}
	a[2*n]=-INF;
	a[2*n+1]=INF;
	acnt=uniquell(a,a,2*n+2);
	
	lseguse(1<<19);
	rep(i,0,n){
		ll l=f(data[i].s-data[i].x);
		ll r=f(data[i].t-data[i].x);
		sayouso T;
		T.k=data[i].x;
		lsegupdate(l,r,T);
	}
	rep(i,0,q){
		ll d;
		scanf("%lld",&d);
		ll t=f(d);
		ll ans=lsegcalc(t,t+1).a;
		printf("%lld\n",ans==INF?-1:ans);
	}
}

Measured memory_bytes: 26052