tt=int(input())
arrow=[]
while tt>0:
w=input()
w=w.split()
n=int(w[0])
x=int(w[1])
a=input()
b=input()
a=a.split()
b=b.split()
a=list(map(int, a))
b=list(map(int, b))
a.sort()
b.sort(reverse= True)
k=0
ans='No'
for i in range(n):
if a[i]+b[i]>x:
k+=1
break
if k==0:
ans='Yes'
arrow.append(ans)
tt-=1
if tt!=0:
r=input()
for i in range(len(arrow)):
print(arrow[i])#include <bits/stdc++.h>
using namespace std;
int main() {
// your code goes here
int t;
cin>>t;
while(t--){
int n,x;
cin>>n>>x;
int a[n],b[n];
for(int i=0; i<n; i++)cin>>a[i];
for(int i=0; i<n; i++)cin>>b[i];
sort(a,a+n);
sort(b,b+n);
bool check=true;
for(int i=0; i<n; i++){
if((a[i]+b[n-1-i])>x){
check=false;
break;
}
}
if(check)cout<<"Yes"<<endl;
else cout<<"No"<<endl;
}
return 0;
}313B - Ilya and Queries | 579A - Raising Bacteria |
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