#include <iostream>
#include <vector>
#include <limits.h>

using namespace std;

int main()
{
    int n, p, i, j;
    cin >> n >> p;

    vector<int> days(n);
    
    for (i = 0; i < n; i++)
    {
        cin >> days[i];
    }

    int current = days[0], out = INT_MAX;
    i = 0, j = 0;

    while (j < n)
    {
        while (current >= p)
        {
            if (out > j - i + 1 && current >= p && j < n)
            {
                out = j - i + 1;
            }

            current -= days[i];
            i++;
        
            if (out > j - i + 1 && current >= p && j < n)
            {
                out = j - i + 1;
            }
        }

        while (current < p)
        {
            j++;

            if (j >= n)
            {
                break;
            }

            current += days[j];
        }

    }

    cout << out;
}