#include <iostream>
using namespace std;
const long long MAXN = (long long)1e5+5;
long long arr[MAXN];
long long n,l,r;
bool check2(long long val){
bool dp[n+(long long)1][n+(long long)1];
for(long long i=0;i<=n;i++){
for(long long j=0;j<=n;j++){
dp[i][j] = false;
}
}
dp[0][0] = true;
for(long long i=(long long)1;i<=n;i++){
for(long long j=1;j<=i;j++){
for(long long k = 0;k<i;k++){
if(dp[k][j-1] && ((arr[i]-arr[k])|val) == val){
dp[i][j] = true;
break;
}
}
}
}
for(long long i=l;i<=r;i++){
if(dp[n][i]){
return true;
}
}
return false;
}
bool check(long long val){
long long dp[n+(long long)1];
for(long long i=0;i<=n;i++){
dp[i] = (long long)1e9;
}
dp[0] = 0;
for(long long i=(long long)1;i<=n;i++){
for(long long j=0;j<i;j++){
if(((arr[i]-arr[j])|val) == val){
dp[i] = min(dp[i],dp[j]+(long long)1);
}
}
}
return dp[n]>=l && dp[n]<=r;
}
int main(){
cin>>n>>l>>r;
for(long long i=(long long)1;i<=n;i++){
cin>>arr[i];
arr[i]+=arr[i-(long long)1];
}
long long val = ((long long)1<<50)-(long long)1;
for(long long i=49;i>=0;i--){
if(l == 1){
if(check(val^((long long)1<<i))){
val^=((long long)1<<i);
// cout<<val<<endl;
}
}else{
if(check2(val^((long long)1<<i))){
val^=((long long)1<<i);
// cout<<val<<endl;
}
}
}
cout<<val<<endl;
}
