#pragma GCC optimize("Ofast")
#pragma GCC optimize("O3")
#include <bits/stdc++.h>

#define el '\n'
#define F first
#define S second

typedef long long ll;
typedef long double ld;
typedef __int128 bigInt;

using namespace std;

const int N = 1e5 + 5, INF = 1e9 + 5, mod = 235813, LOG = 21, SQ = 500;

int add(int a, int b) {
    while (a < 0) {
        a += mod;
    }
    a %= mod;
    while (b < 0) {
        b += mod;
    }
    b %= mod;
    return (a + b) % mod;
}

int mul(int a, int b) {
    while (a < 0) {
        a += mod;
    }
    a %= mod;
    while (b < 0) {
        b += mod;
    }
    b %= mod;
    return 1LL * a * b % mod;
}

int fp(int b, int p) {
    int ret = 1;

    while(p) {
        if(p & 1)
            ret = (1LL * ret * b) % mod;

        p >>= 1;
        b = (1LL * b * b) % mod;
    }

    return ret;
}

int inv(int x) {
    return fp(x, mod - 2);
}

int fac[N], invFac[N];

void pre() {
    fac[0] = invFac[0] = 1;

    for (int i = 1; i < N; i++)
        fac[i] = (1LL * fac[i - 1] * i) % mod;

    invFac[N - 1] = inv(fac[N - 1]);
    for (int i = N - 2; i >= 1; i--)
        invFac[i] = (1LL * invFac[i + 1] * (i + 1)) % mod;
}

int C(int n, int r) {
    assert(n >= r);
    return 1LL * fac[n] * (1LL * invFac[r] *invFac[n - r] % mod) % mod;
}

int n, a[N], co[N];

void doWork() {
    cin >> n;

    for (int i = 1; i <= n; i++) {
        cin >> a[i];
    }

    int sign = (n % 2 ? 1 : -1);

    for (int i = 1; i <= n; i++) {
        co[i] = mul(sign, C(n - 1, i - 1));
        sign *= -1;
    }

    ll sum = 0;

    for (int i = 1; i <= n; i++) {
        sum = add(sum, mul(co[i], a[i]));
    }

    sum %= mod;

    int ans = 0;

    for (int i = 1; i <= n; i++) {
        int rem = mul(co[i], a[i]);
        int curSum = add(sum, -rem);
        int x = mul(-curSum, inv(co[i]));

        if (x == a[i]) {
            continue;
        }
        if (x <= 100000) {
            ans++;
        }
        else if (x >= mod - 100000 and x < mod) {
            ans++;
        }
    }

    cout << ans << el;
}

int main() {
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);

    pre();
    int tests = 1;
//    cin >> tests;
    for (int i = 1; i <= tests; i++) {
        doWork();
    }
}