#include <bits/stdc++.h>

void solve() {
    int n, x;
    std::cin >> n >> x;
    std::vector<int> a(n);
    for (int i = 0; i < n; i++) std::cin >> a[i];
    for (int i = 0; i < n; i++) {
        a.push_back(a[i]);
    }
    int r = 0;
    int sum = 0;
    int ans = 0;
    for (int l = 0; l < n; l++) {
        if (r < l) r = l;
        while (r < l + n && sum + a[r] <= x) {
            sum += a[r];
            r++;
        }
        ans = std::max(ans, sum);
        if (l < r) {
            sum -= a[l];
        }
    }
    std::cout << ans << '\n';
}

int main() {
    std::cin.tie(0)->sync_with_stdio(0);
    std::cout << std::fixed << std::setprecision(16);
    int t = 1;

    while (t--) solve();
}