代码：

#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 10;
int n, m;
int a[N];
int ans = 1;
int main()
{
    cin >> n >> m;
    for (int i = 1; i <= n; i++)
        cin >> a[i];
    int num = 0;
    for (int i = 1; i <= n; i++)
    {
        if (num + a[i] <= m)
        {
            num += a[i];
        }
        else
        {
            ans++;
            num=a[i];
        }
    }
cout<<ans;
    return 0;
}