#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i, n) for(int i=0;i<(n);++i)
#define rep1(i, n) for(int i=1;i<=(n);i++)
#define ll long long
using mint = modint998244353;
using P = pair<ll,ll>;
using lb = long double;
using T = tuple<ll, ll, ll>;
#ifdef LOCAL
#  include <debug_print.hpp>
#  define dbg(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define dbg(...) (static_cast<void>(0))
#endif

int main()
{
    int n, x;
    cin >> n >> x;
    vector<int> a(2*n);
    rep(i,n){
        cin >> a[i];
        a[i+n] = a[i]; 
    }
    int j = 0;
    int sum = 0;
    int ans = 0;
    for(int i=0;i<2*n;i++){
        sum += a[i];
        while(j<=i && sum>x){
            sum -= a[j];
            j++;
        }
        ans = max(ans, sum);
    }
    cout << ans << endl;
    return 0;
}