#include<bits/stdc++.h>
using namespace std;
int num[]={1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,4,1,2,3,1,2,3,4};
int main()
{
	long long cnt=0;
	char s[1000];
	gets(s);
	int len=strlen(s);
	for(int i=0;i<len;i++)
	{
		if(s[i]>='a'&&s[i]<='z') cnt+=num[s[i]-'a'];
		else cnt++;
	}
	cout<<cnt;
	return 0;
}