#include <bits/stdc++.h>
#define GOOD_LUCK ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define int long long
#define endl "\n"
#define ff first
#define ss second
#define pb push_back
#define all(v) v.begin(), v.end()
using namespace std;
constexpr int MAX = 2e+5 + 1, INF = 2e+16, MOD = 1e+9 + 7, K = 43;
void _() {
int n, a, b;
cin >> n >> a >> b;
vector <int> v(n);
for (int &i : v) cin >> i;
int res = (1LL << K) - 1;
for (int z = K - 1; z >= 0; z--) {
int mask = res - (1LL << z);
vector <bitset <2001>> dp(n+1);
dp[0][0] = 1;
for (int i = 1; i <= n; i++) {
int s = v[i-1];
for (int j = i-1; j >= 0; j--) {
if ((mask | s) == mask) {
dp[i] |= (dp[j] << 1);
}
if (j) s += v[j-1];
}
}
bool ok = 0;
for (int i = a; i <= b; i++) {
ok |= dp[n][i];
}
if (ok) res = mask;
}
cout << res;
}
signed main() {
GOOD_LUCK
int tests=1;
// cin >> tests;
for (int i=1; i <= tests; i++) {
_();
cout << endl;
}
return 0;
}
