#include <bits/stdc++.h>
using namespace std;


int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int Na,Nb,Nc; cin >> Na >> Nb >> Nc;
    vector<long long> suma(6009),sumb(6009),sumc(6009),Va(6009),Vb(6009),Vc(6009);
    for(int i=0; i<Na; i++){
        int a; cin >> a;
        suma.at(a+3000) += a;
        Va.at(a+3000)++; 
    }
    for(int i=0; i<Nb; i++){
        int b; cin >> b;
        sumb.at(b+3000) += b;
        Vb.at(b+3000)++;
    }
    for(int i=0; i<Nc; i++){
        int c; cin >> c; 
        sumc.at(c+3000) += c;
        Vc.at(c+3000)++;
    }

    for(int i=6007; i>=0; i--) Va.at(i) += Va.at(i+1);
    for(int i=6007; i>=0; i--) Vb.at(i) += Vb.at(i+1);
    for(int i=6007; i>=0; i--) Vc.at(i) += Vc.at(i+1);
    for(int i=6007; i>=0; i--) suma.at(i) += suma.at(i+1);
    for(int i=6007; i>=0; i--) sumb.at(i) += sumb.at(i+1);
    for(int i=6007; i>=0; i--) sumc.at(i) += sumc.at(i+1);


    long long answer = 0;
    for(int i=0; i<=6000; i++){
        long long sa = suma.at(i), va = Va.at(i);
        for(int k=0; k<=6000; k++){
            long long sb = sumb.at(k),vb = Vb.at(k);
            long long now = sa*vb;
            if(va == 0){
                answer = max({answer,now,now+sb*Nc});
                continue;
            }

            long long border = (-sb+va-1)/va;
            if(border > 3000) border = 3001;
            if(border < -3000) border = -3000; 
            long long sc = sumc.at(border+3000),vc = Vc.at(border+3000);
            answer = max(answer,now+sc*va+sb*vc);
        }
    }
    cout << answer << endl;
}