#include <iostream>
#include <vector>

using namespace std;

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

	int n; long long p;
	cin >> n >> p;
	vector<long long> v(n + 1);
	for (int i = 1; i <= n; ++i)
		cin >> v[i];

	long long sum = 0;
	int l = 1, min_l = n + 1;
	for (int r = 1; r <= n; ++r) {
		sum += v[r];

		while (sum >= p) {
			min_l = min(min_l, r - l + 1);
			sum -= v[l];
			++l;
		}
	}

	if (min_l == n + 1) {
		cout << "0\n";
	}
	else {
		cout << min_l << "\n";
	}
	
}