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

int main()
{
	int n;
	cin >> n;
	if (n == 0) {
		cout << 4 << endl;
		return 0;
	}
	int r1 = 1, r2 = 2, tn = n;
	while (tn) {
		switch (tn % 10)
		{
		case 1:
		case 2:
		case 3:
		case 5:
		case 7:
			r1 += 2;
			break;
		case 0:
		case 4:
		case 6:
		case 9:
			r1 += 3;
			break;
		case 8:
			r1 += 4;
			break;
		}
		tn /= 10;
	}
	tn = n;
	while (tn) {
		switch (tn % 10)
		{
		case 1:
		case 2:
		case 3:
		case 5:
		case 7:
			r2 += 1;
			break;
		case 0:
		case 4:
		case 6:
		case 9:
			r2 += 3;
			break;
		case 8:
			r2 += 5;
			break;
		}
		tn /= 10;
	}
	cout << min(r1, r2) << endl;
	return 0;
}