#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define fi first
#define se second
#define db double
#define inf 0x3f3f3f3f
using namespace std;
const int N=1e6+5;
int n,m,cnt,a[N],b[N],f1[N],f2[N],sm1[N],sm2[N],lsh[N];
db res1,res2,p[N],q[N];
int get(int x){
    return lower_bound(lsh+1,lsh+1+cnt,x)-lsh;
}
bool chk(db mid){
    db mx1=-inf,mx2=inf;
    for(int i=1;i<=cnt;i++){
        if(p[i]>=0&&q[i]>=mid)return 1;
        if(p[i]<=0&&q[i]<=mid)continue;
        if(p[i]<0)mx1=max(mx1,(mid-q[i])/p[i]);
        else mx2=min(mx2,(mid-q[i])/p[i]);
    }
    return mx1>=mx2;
}
int main(){
    //freopen("dice.in","r",stdin);
    //freopen("dice.out","w",stdout);
    ios::sync_with_stdio(false);
    cin.tie(0),cout.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        lsh[++cnt]=a[i],lsh[++cnt]=max(1,a[i]-1),lsh[++cnt]=a[i]+1;
    }
    cin>>m;
    for(int i=1;i<=m;i++){
        cin>>b[i];
        lsh[++cnt]=b[i],lsh[++cnt]=max(1,b[i]-1),lsh[++cnt]=b[i]+1;
    }
    sort(lsh+1,lsh+1+cnt),cnt=unique(lsh+1,lsh+1+cnt)-lsh-1;
    for(int i=1;i<=m;i++)f2[get(b[i])]++;
    for(int i=1;i<=cnt;i++)sm2[i]=sm2[i-1]+f2[i];
    db sm=0;
    for(int i=1;i<=n;i++){
        int j=get(a[i]);
        sm+=(sm2[j-1]+f2[j]/2.0)/n/m;
    }
    if(sm<0.5){
        swap(n,m),swap(a,b);
    }
    for(int i=1;i<=cnt;i++)f1[i]=f2[i]=0;
    for(int i=1;i<=n;i++)f1[get(a[i])]++;
    for(int i=1;i<=m;i++)f2[get(b[i])]++;
    for(int i=1;i<=cnt;i++){
        sm1[i]=sm1[i-1]+f1[i];
        sm2[i]=sm2[i-1]+f2[i];
    }
    for(int i=1;i<=cnt;i++){
        p[i]=(sm1[i-1]+f1[i]/2.0)/n-0.5;
        q[i]=(sm2[cnt]-sm2[i]+f2[i]/2.0)/m;
    }
    db l=0,r=1;
    for(int i=1;i<=50;i++){
        db mid=(l+r)/2;
        if(chk(mid))l=mid;
        else r=mid;
    }
    res1=1-l;
    for(int i=1;i<=cnt;i++){
        p[i]=(sm2[cnt]-sm2[i]+f2[i]/2.0)/m-0.5;
        q[i]=(sm1[i-1]+f1[i]/2.0)/n;
    }
    l=0,r=1;
    for(int i=1;i<=50;i++){
        db mid=(l+r)/2;
        if(chk(mid))l=mid;
        else r=mid;
    }
    res2=l;
    cout<<fixed<<setprecision(10)<<res1<<" "<<res2;
}