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class SetTesting
{
    static int digSum(int n)
    {
        if (n == 0)
            return 0;
        return (n % 9 == 0) ? 9 : (n % 9);
    }

    public int getCodeThroughStrings(String str){
        int cnt = 0;
        for(int i=0;i<str.length();i++){
            if(str.charAt(i) != ' '){
                cnt++;
            }
        }
        return digSum(cnt);
    }

    public static void main(String[] args){

        String str = "Micro Technologies";

        SetTesting test = new SetTesting();
        int ans = test.getCodeThroughStrings(str);
        System.out.println(ans);
    }

}