#include <bits/stdc++.h>
using namespace std;
 
void executeTime() {
    cerr << "Time Taken: " << (float)clock() / CLOCKS_PER_SEC << " secs";
}
 
int main() {
 
 
    int n, k; cin >> n >> k;
 
    vector<int> v(n);
 
    for (auto &x : v) {
        cin >> x;
    }
 
    int p = 0, c = 0;
    unordered_map<int, int> mp;
    mp[0]++;
 
    for (auto &x : v) {
        p += x;
 
        if (mp[p - k]) {
            c++;
        }
 
        mp[p]++;
    }
 
    cout << c << endl;
 
    executeTime();
    return 0;
}

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1 23 3 7 50
4 32 2 4 50