# include<stdio.h> #include<iostream> using namespace std; int main(){ int a,b,c,d,e,n; cin>>n; a=n/10000; n=n%10000; b=n/1000; n=n%1000; c=n/100; n=n%100; d=n/10; n=n%10; e=n; cout<<a+b+c+d+e<<endl; return 0; }