#include <bits/stdc++.h>
#define ll long long
#define all(x) x.begin(), x.end()
#define pb push_back
using namespace std;
const ll inf = 1e10;
void sl(){
ll n, a, b; cin >> n >> a >> b;
ll bt = 45; ll curr = 0;
vector<ll>v(n), pref(n + 1, 0);
for(ll i = 0; i < n; i++){
cin >> v[i];
pref[i + 1] = pref[i] + v[i];
}
while(bt-- >= 0){
vector<array<ll, 2>>dp(n, {inf, -inf});
ll temp = curr | (1 << bt); dp[0] = {0, 0};
for(ll i = 0; i < n; i++){
for(ll j = 0; j < i; j++){
ll ms = pref[i - 1] - pref[j];
ll ok = (ms & ~temp);
if(!ok){
dp[i + 1][0] = min(dp[i + 1][0], dp[j + 1][0] + 1);
dp[i + 1][1] = max(dp[i + 1][1], dp[j + 1][1] + 1);
}
}
}
if(dp[n][0] <= b and dp[n][1] >= a) curr = temp;
}
cout << curr << endl;
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
ll t = 1; //cin >> t;
while(t--) sl();
}
