#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int a; cin>>a; int a1=a%10; int b=a%100/10*1; int c=a%1000/100*2; int d=a%10000/1000*4; int e=a%100000/10000*8; cout<<a+b+c+d+e; return 0; }