#include <iostream>
#include <string>

using namespace std;
int type_definition (string s)
{
    bool flag = false;
    if ((s[0] == 'R') and (s.find('C') > 0))
    {
        flag = true;
    }
    if ((int(s[1]-'0') >= 0) and (int(s[1]-'0') <=9) and (flag == true))
    {
        return 1;
    }
    else
    {
        return -1;
    }
}
void (string aa_number)
{
    string RXCY = R;
    string numberPart;
    for (int i = 0; i < )
}

int main()
{
    string str;
    cin >> str;
    cout << type_definition(str);
    return 0;
}