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

int main()
{
	char a[27] = {"12312312312312312341231234"}, b;
	int c = 0;
	
	while ((b = getchar()) != 10)
	{
		if (b != ' ') 
			c += a[b-97] - 48;
		else
			c++;
	}
	cout << c <<"\n";
	
	return 0;
}