#include<bits/stdc++.h>
using namespace std;
int n, A, B;
int v[55], sv[55];
bool dp[55][55][505];
//dp[i][g][y] := using first i elements, making g groups, is it possible to have result equals y?
//dp[i][g][y] is true if
int main(){
cin.tie(0)->sync_with_stdio(0);
cin >> n >> A >> B;
for(int i = 1; i <= n; i++){
cin >> v[i];
sv[i] = sv[i-1]+v[i];
}
for(int i = 1; i <= n; i++){
dp[i][1][sv[i]] = true;
}
for(int i = 1; i <= n; i++){
for(int g = 1; g <= i; g++){
for(int y = 1; y <= n*10; y++){
//if dp[i][g][y] is true, dp[i+x][g+1][y|(sv[i+x]-sv[i-1])] is also true;
if(!dp[i][g][y]) continue;
for(int x = 1; i+x <= n; x++){
dp[i+x][g+1][y|(sv[i+x]-sv[i])] = true;
}
}
}
}
for(int y = 1; y <= n*10; y++)
for(int g = A; g <= B; g++)
if(dp[n][g][y]){
cout << y << '\n';
return 0;
}
}
