#include<bits/stdc++.h>
#define CSP2026 using
#define RP namespace
#define PLUSPLUS std
CSP2026 RP PLUSPLUS;
#define debug(x) cout<<"clock="<<clock()<<' '<<#x<<'='<<(x)<<'\n'
//#define getchar getchar_unlocked
using ll=long long;
inline int rd(){int x=0,f=1;char ch=getchar();for(;!isdigit(ch);ch=getchar())if(ch=='-')f=-1;for(;isdigit(ch);ch=getchar())x=(x<<3)+(x<<1)+(ch^48);return x*f;}
inline ll rdll(){ll x=0;int f=1;char ch=getchar();for(;!isdigit(ch);ch=getchar())if(ch=='-')f=-1;for(;isdigit(ch);ch=getchar())x=(x<<3)+(x<<1)+(ch^48);return x*f;}
constexpr int N=3e5+5;
int a[N];
signed main(){
	int n=rd(),B=rd(),C=rd(),mx=0;
	for(int i=1;i<=n;++i)a[i]=rd();
	for(int i=0;i<(1<<n);++i){
		int p=i;
		bool flag=1;
		while(p){
			if((p&((1<<C)-1))==(1<<C)-1){flag=0;break;}
			p>>=1;
		}if(!flag)continue;
		p=i^((1<<n)-1);
		while(p){
			if((p&((1<<B)-1))==(1<<B)-1){flag=0;break;}
			p>>=1;
		}if(!flag)continue;
		int s=0;
		for(int j=0;j<n;++j)s+=a[j+1]*((i>>j)&1);
		mx=max(mx,s);
	}cout<<mx<<'\n';
}