#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn = (int)53;
const int INF = (int)1e9;
const ll LINF = (ll)1e18;
int n, A, B;
ll a[maxn], pre[maxn]; ll ans=LINF;
bool dp[maxn][maxn][25][1028];
void recur(int pos, int lpos, int knum, int Or){
if(dp[pos][lpos][knum][Or]) return;
dp[pos][lpos][knum][Or]=1;
if(pos==n+1) return;
if(pos!=n) recur(pos+1, lpos, knum, Or);
recur(pos+1, pos, knum+1, Or|(pre[pos]-pre[lpos]));
}
int32_t main() {
cin >> n >> A >> B;
for(int i = 0; i < n; i++) cin >> a[i], pre[i+1]=pre[i]+a[i];
int dp[110][2050];
for(int i = 0; i <= n; i++)
for(int j = 0; j < 2048; j++)
dp[i][j]=INF;
dp[0][0]=0; int sum;
for(int i = 0; i < n; i++)
for(int j = 0; j < 2048; j++)
for(int k = i+1; k <= n; k++)
if(dp[i][j]<INF) sum=pre[k]-pre[i],
dp[k][j|sum]=min(dp[k][j|sum], dp[i][j]+1);
for(int j = 0; j < 2048; j++)
if(dp[n][j]<=B) ans=min(ans,(ll)j);
cout << ans;
}
