#include <bits/stdc++.h>
using namespace std;
#define in ({int x=0;int c=getchar(),n=0;for(;!isdigit(c);c=getchar()) n=(c=='-');for(;isdigit(c);c=getchar()) x=x*10+c-'0';n?-x:x;})
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int rnd(int l,int r){return l+rng()%(r-l+1);}
#define fasty ios_base::sync_with_stdio(false),cin.tie(nullptr);
#define task "SCULPTURE"
#define forinc(a,b,c) for(int a=b,_c=c;a<=_c;++a)
#define fordec(a,b,c) for(int a=b,_c=c;a>=_c;--a)
#define forv(a,b) for(auto&a:b)
#define fi first
#define se second
#define pb push_back
#define ii pair<int,int>
#define mt make_tuple
#define all(a) a.begin(),a.end()
#define reset(f, x) memset(f, x, sizeof(f))
#define bit(x,i) ((x>>(i))&1)
#define on(x,i) (x|(1ll<<(i-1)))
#define off(x,i) (x&~(1<<(i-1)))
long long ret;
int n,a,b;
int y[2010];
//int f[2010][2010];
main()
{
//freopen(task".inp","r",stdin);
//freopen(task".out","w",stdout);
n=in,a=in,b=in;
forinc(i,1,n) y[i]=in;
fordec(i,40,0)
{
bitset<2005> f[n+5];
f[1][1]=1;
forinc(j,1,n)
{
long long cur=0;
forinc(t,j,n)
{
cur+=y[t];
if((cur>>(i+1)|ret)==ret && !bit(cur,i)&1)
//forinc(k,1,b) if(f[j][k]) f[t+1][k+1]=1;
f[t+1]|=f[j]<<1;
}
}
ret<<=1;
int ok=0;
forinc(j,a,b) ok=ok||f[n+1][j+1];
ret+=!ok;
}
cout<<ret;
}
