#include <stdio.h>
int main() {
    int N;
    if (scanf("%d", &N) != 1) return 0;
 
    long long tabungan_total = 0;
    int jumlah_47 = 0;
 
    static int catatan_frekuensi[2500005]; 
    catatan_frekuensi[0] = 1;
 
    for (int i = 0; i < N; i++) {
        int angka_masuk;
        scanf("%d", &angka_masuk);
 
        tabungan_total += angka_masuk;
 
        if (tabungan_total >= 47) {
            long long cari = tabungan_total - 47;
            jumlah_47 += catatan_frekuensi[cari];
        }
 
        catatan_frekuensi[tabungan_total]++;
    }
 
    printf("%d\n", jumlah_47);
 
    return 0;
}

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NwoyIDQ3IDEwMDQ3IDQ3IDEwNDcgNDcgNDcK

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