【題目敘述】https://atcoder.jp/contests/abc160/tasks/abc160_e
#include <bits/stdc++.h>
using namespace std;
int x, y, a, b, c, r[100005], g[100005], w[100005], p;
vector <int> v;
long long ans;
int main(){
cin >> x >> y;
cin >> a >> b >> c;
for (int i = 0; i < a; i++){
cin >> r[i];
}
for (int i = 0; i < b; i++){
cin >> g[i];
}
for (int i = 0; i < c; i++){
cin >> w[i];
}
sort(r, r+a);
reverse(r, r+a);
sort(g, g+b);
reverse(g, g+b);
sort(w, w+c);
reverse(w, w+c);
for (int i = 0; i < x; i++){
ans += r[i];
v.push_back(r[i]);
}
for (int i = 0; i < y; i++){
ans += g[i];
v.push_back(g[i]);
}
sort(v.begin(), v.end());
for (int i:v){
if (i < w[p]){
ans -= i;
ans += w[p];
p++;
}
else break;
}
cout << ans << "\n";
}