#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second
const int inf = 1e9;
const int lg = 60;
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n, l, r; cin>>n>>l>>r;
vector<int> a(n + 1);
vector<ll> p(n + 1);
for (int i = 1; i <= n; i++){
cin>>a[i];
p[i] = p[i - 1] + a[i];
}
vector<pii> all;
ll out = 0;
for (int b = lg; b >= 0; b--){
all.pb({b, 0});
vector<int> dp(n + 1, inf); dp[0] = 0;
for (int i = 1; i <= n; i++){
for (int j = 1; j <= i; j++){
ll s = p[i] - p[j - 1];
bool ind = 1;
for (auto [bb, vv]: all){
if (((s >> bb) & 1) != vv){
ind = 0;
break;
}
}
if (ind){
dp[i] = min(dp[i], dp[j - 1] + 1);
}
}
}
if (dp[n] > r){
all.back().ss = 1;
out += (1LL << b);
}
}
cout<<out<<"\n";
}
