#include <bits/stdc++.h>
using namespace std;

typedef unsigned long long ull;

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	int n;
	vector<ull> stones;
	while (cin >> n) {
		stones.push_back(n);
	}

	for (int i = 0; i < 75; i++) {
		for (int x = 0; x < stones.size(); x++) {
			if (stones[x] == 0) {
				stones[x] = 1;
			} else {
				int nd = log10(stones[x]) + 1;
				if (nd % 2 == 0) {
					ull l = pow(10, nd / 2);
					stones.insert(stones.begin() + x + 1, stones[x] % l);
					stones[x] /= l;
					x++;
				} else {
					stones[x] *= 2024;
				}
			}
		}
	}

	cout << stones.size() << '\n';
}