C++ :

#include<bits/stdc++.h>
using namespace std;
int ans;
string s;
int work(char x)
{
    if(x=='A' || x=='B' || x=='C') return 3;
    if(x=='D' || x=='E' || x=='F') return 4;
    if(x=='G' || x=='H' || x=='I') return 5;
    if(x=='J' || x=='K' || x=='L') return 6;
    if(x=='M' || x=='N' || x=='O') return 7;
    if(x=='P' || x=='Q' || x=='R' || x=='S') return 8;
    if(x=='T' || x=='U' || x=='V') return 9;
    if(x=='W' || x=='X' || x=='Y' || x=='Z') return 10;
}
int main()
{
    cin>>s;
    for(int i=0;i<s.size();i++)
        ans+=work(s[i]);
    cout<<ans;    
    return 0;
}