#include <iostream>
#include <vector>
#include <climits>

using namespace std;

int main()
{
	int N, P;
	cin >> N >> P;
	
	vector <int> x(N);

	for (auto& e : x) cin >> e;

	int h = INT_MAX;

	int a = 0, b = 0, s = x[0];
	while (b < N) {
		if (a == b) {
			++b;
			if (b < N) s += x[b];
			if (s >= P) h = min(h, b - a + 1);
		}
		else {
			if (s < P) {
				++b;
				if (b < N) s += x[b];
			}
			else {
				h = min(h, b - a + 1);
				s -= x[a];
				++a;
			}
		}
	}

	cout << h << '\n';
	return 0;
}