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G1.cpp
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G1.cpp
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#include<bits/stdc++.h>
using namespace std;
#define fastio ios::sync_with_stdio(0);cin.tie(0)
long long ara[100005],b[100005];
int main()
{
fastio;
long long t,n,m,i,cnt,dif;
cin>>t;
while(t--)
{
cnt=0;
dif=0;
cin>>n>>m;
ara[0]=1;
for(i=1;i<n;i++)
cin>>ara[i];
for(i=0;i<n;i++)
cin>>b[i];
sort(ara,ara+n);
sort(b,b+n);
for(i=0;i<n-cnt;i++)
{
if(ara[i]>=b[i+cnt])
{
int p=0;
while(i+cnt+1<n)
{
cnt++;
if(ara[i]<b[i+cnt])
{
p=1;
break;
}
}
if(p==0)
{
cnt=n-i;
break;
}
}
}
cout<<cnt<<"\n";
}
}