#include<iostream>
using namespace std;
int main()
{
    char a;
    int l=0, d=0, o=0;
    do
    {
        a=getchar();
        if((a>='a'&&a<='z')||(a>='A'&&a<='Z'))
            l++;
        else if(a>='0'&&a<='9')
            d++;
        else if(a!='?')
            o++;
    }
    while(a!='?');
    cout<<"Letters="<<l<<endl<<"Digits="<<d<<endl<<"Others="<<o<<endl;
    return 0;
}