#include <bits/stdc++.h>
using namespace std;
int main(){
  int N, X;
  cin >> N >> X;
  vector<int> A(N);
  for (int i = 0; i < N; i++){
    cin >> A[i];
  }
  int L = 0, R = 0;
  int sum = 0;
  int ans = 0;
  while (L < N && R - L <= N){
    if (sum <= X){
      ans = max(ans, sum);
      sum += A[R % N];
      R++;
    } else {
      sum -= A[L % N];
      L++;
    }
  }
  cout << ans << endl;
}