int x,s,a,b,c;
    cin>>x;
    a=x%10;
    b=x/10%10;
    c=x/100;
    s=a+b+c;
    cout<<s;
	
	return 0;
}
/**************************************************************
	Problem: 1027
	User: chenyaohuo
	Language: C++
	Result: Compile Error
****************************************************************/