text: // atcoder/abc130/B/main.cpp
  // author: @___Johniel
  // github: https://github.com/johniel/
  
  #include <bits/stdc++.h>
  
  #define each(i, c) for (auto& i : c)
  #define unless(cond) if (!(cond))
  
  using namespace std;
  
  typedef long long int lli;
  typedef unsigned long long ull;
  typedef complex<double> point;
  
  template<typename P, typename Q> ostream& operator << (ostream& os, pair<P, Q> p) { os << "(" << p.first << "," << p.second << ")"; return os; }
  template<typename P, typename Q> istream& operator >> (istream& is, pair<P, Q>& p) { is >> p.first >> p.second; return is; }
  template<typename T> ostream& operator << (ostream& os, vector<T> v) { os << "("; each (i, v) os << i << ","; os << ")"; return os; }
  template<typename T> istream& operator >> (istream& is, vector<T>& v) { each (i, v) is >> i; return is; }
  
  template<typename T> inline T setmax(T& a, T b) { return a = std::max(a, b); }
  template<typename T> inline T setmin(T& a, T b) { return a = std::min(a, b); }
  
  int main(int argc, char *argv[])
  {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
  
    lli n, x;
    while (cin >> n >> x) {
      vector<lli> l(n);
      cin >> l;
      int cnt = 1;
      lli y = 0;
      each (i, l) {
        // cout << y << endl;
        y += i;
        if (x < y) break;
        ++cnt;
      }
      cout << cnt << endl;
      // cout << endl;
    }
  
    return 0;
  }
  