#include <bits/stdc++.h>

using namespace std;

int f(int n) {
    return n * (n + 1) / 2;
}

int main() {
    int n;
    cin >> n;

    int ans = 3;
    for (int i = 1; f(i) <= n; i++) {
        if (f(i) == n) {
            ans = 1;
            break;
        }

        int t = n - f(i);
        for (int j = i; f(j) <= t; j++) {
            if (f(j) == t) {
                ans = min(ans, 2);
                break;
            }
        }
    }

    cout << ans << endl;
    return 0;
}