#include<iostream> using namespace std; int main(){ int a,g,s,b,q; cin>>a; g=a%10; s=a%100-g; b=a%1000-s-g; q=(a%10000-b-s-g)/10; b=b*10; s=s/10; g=g*10; cout<<g+s+b+q; return 0; }