// #pragma optimize("Ofast")
#include "bits/stdc++.h"
#define int long long
#define all(v) (v).begin(), (v).end()
#define pb push_back
#define em emplace_back
#define mp make_pair
#define F first
#define S second
using namespace std;
template<class C>
using vec = vector<C>;
using vi = vector<int>;
using vpi = vector<pair<int, int> >;
using pii = pair<int, int>;
#ifdef LOCAL
const int N = 11;
#else
const int N = 2011;
#endif
int n, l, r;
int a[N];
bitset<N> dp[N];
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n >> l >> r;
for (int i = 0; i < n; i++)
cin >> a[i];
int mask = 0;
for (int b = 41; b >= 0; b--) {
memset(dp, 0, sizeof dp);
dp[0][0] = true;
for (int i = 0; i < n; i++) {
int sum = 0;
for (int j = i; j >= 0; j--) {
sum += a[j];
bool check = ((sum >> b) & (~mask >> b)) == 0;
if (check) {
dp[i + 1] |= dp[j] << 1;
}
}
}
mask += 1ll << b;
for (int i = l; i <= r; i++) {
if (dp[n][i]) {
mask -= 1ll << b;
break;
}
}
}
cout << mask << '\n';
}
