#include <iostream>
#include <vector>

using namespace std;

int main()
{
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    int N, X, S = 0, ans, i, j;
    cin >> N >> X;
    vector<int> A(N);

    for (i = 0; i != N; ++i)
        cin >> A[i];

    for (i = 0; i != N && S <= X; ++i)
        S += A[i];

    if (S <= X)
    {
        cout << S << '\n';
        return 0;
    }

    ans = S - A[i - 1];
    for (S -= A[0], j = 1; j != N; S -= A[j], ++j)
    {
        for (; S <= X; ++i)
            S += A[i % N];

        if (S - A[(i - 1) % N] > ans)
            ans = S - A[(i - 1) % N];
    }

    cout << ans << '\n';
    return 0;
}