#include <bits/stdc++.h>

using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n, k;
    long long ans = 0;
    cin >> n >> k;
    vector<long long> vv(n);
    for(int i = 0; i < n; i++) {
        cin >> vv[i];
    }
    vector<long long> v;
    partial_sum(vv.begin(), vv.end(), back_inserter(v));
    for(auto itr = v.begin(); itr != v.end(); itr++) {
        if(itr == v.begin()) {
            auto l = lower_bound(itr, v.end(), k);
            auto r = upper_bound(itr, v.end(), k);
            if(*(r - 1) == k and *l == k) {
                ans += r - l;
            }
        } else {
            auto l = lower_bound(itr, v.end(), k + *itr);
            auto r = upper_bound(itr, v.end(), k + *itr);
            if(*(r - 1) == *itr and *(r - 1) - *(l - 1) != k) {
                continue;
            }
            if(*(r - 1) - *itr == k and *l - *itr == k) {
                ans += r - l;
            }
        }
    }
    cout << ans << "\n";
    return 0;
}