#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
/* DEFINES */
#define S second
#define F first
#define ll long long
#define ull unsigned long long
#define ld long double
#define npos ULLONG_MAX
#define INF LLONG_MAX
#define vv(a) vector<a>
#define pp(a, b) pair<a, b>
#define pq(a) priority_queue<a>
#define qq(a) queue<a>
#define ss(a) set<a>
#define mm(a, b) map<a, b>
#define ump(a, b) unordered_map<a, b>
#define sync \
ios_base::sync_with_stdio(0); \
cin.tie(0); \
cout.tie(0);
#define elif else if
#define endl "\n"
#define allc(a) begin(a), end(a)
#define all(a) a, a + sizeof(a) / sizeof(a[0])
#define pb push_back
#define logi(a) __lg(a)
#define sqrt(a) sqrtl(a)
#define mpr make_pair
#define ins insert
using namespace std;
using namespace __gnu_pbds;
using namespace __cxx11;
typedef char chr;
typedef basic_string<chr> str;
template <typename T, typename key = less<T>>
using ordered_set = tree<T, null_type, key, rb_tree_tag, tree_order_statistics_node_update>;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
void solve()
{
ll n, l, r;
cin >> n >> l >> r;
ll ans = (1ll << 41) - 1;
ll a[n + 1];
for (ll i = 1; i <= n; i++)
cin >> a[i];
if (l > 1)
{
bool dp[n + 1][n + 1];
for (ll bit = 40; bit >= 0; bit--)
{
ans ^= (1ll << bit);
for (ll i = 0; i <= n; i++)
for (ll j = 0; j <= n; j++)
dp[i][j] = 0;
dp[0][0] = 1;
for (ll i = 1; i <= n; i++)
for (ll cnt = 1; cnt <= n; cnt++)
for (ll j = i, sum = 0; j >= 1; j--)
sum += a[j], dp[i][cnt] |= dp[j - 1][cnt - 1] and (sum | ans) == ans;
bool ok = false;
for (ll i = l; i <= r; i++)
ok |= dp[n][i];
if (!ok)
ans ^= (1ll << bit);
}
}
else
{
ll dp[n + 1];
for (ll bit = 40; bit >= 0; bit--)
{
ans ^= (1ll << bit);
dp[0] = 0;
for (ll i = 1; i <= n; i++)
{
dp[i] = n + 1;
for (ll j = i, sum = 0; j >= 1; j--)
sum += a[j], dp[i] = min(dp[i], ((sum | ans) == ans ? dp[j - 1] + 1 : n + 1));
}
if (dp[n] > r)
ans ^= (1ll << bit);
}
}
cout << ans << endl;
}
/*
*/
int main()
{
sync
// precomp();
ll t = 1;
// cin >> t;
for (ll i = 1; i <= t; i++)
// cout << "Case #" << i << ": ",
solve();
cerr << "\nTime elapsed : " << clock() * 1000.0 / CLOCKS_PER_SEC << " ms\n";
}
