//####################
//BaliSculture
//####################
#include<bits/stdc++.h>
#define rall(x) x.rbegin(), x.rend()
#define eb emplace_back
#define pb push_back
#define all(x) x.begin(), x.end()
#define int int64_t
using namespace std;
const int LOG = 42;
signed main(){
ios::sync_with_stdio(false);
cin.tie(0);
int n,A,B;
cin>>n>>A>>B;
vector<int> vals(n);
for(int &i:vals)cin>>i;
auto possible = [&](int acceptable,int G){
vector<vector<bool>> dp(n+1,vector<bool>(n+1,false));
dp[n][0] = true;
for(int k=1 ; k <= n ; k++){
for(int pos = n-1 ; pos>=0U ; pos--){
int sum(0);
for(int i = pos ; i < n ; i++){
sum += vals[i];
if((sum|acceptable) == acceptable){//on est bon
dp[pos][k] = dp[i+1][k-1];
if(dp[pos][k])break;
}
}
}
}
return (bool)dp[0][G];
};
int ans = ((int)1)<<(LOG-1);
for(int g=A;g<=B;g++){
int mask = 0;
for(int b=0;b<LOG ; b++)mask|=(((int)1)<<b);
for(int b = LOG-1 ; b>=(int)0 ; b--){
bool re = possible(mask^(((int)1)<<b), g);
if(re){
mask = (mask^(((int)1)<<b));
}
}
ans = min(ans, mask);
}
cout << ans << endl;
return 0;
};
