#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,b,c,d,e,f,g,h,n; cin>>a>>b>>c>>d; a=a*1000; b=b*100; c=c*10; n=a+b+c+d; e=a/10; f=b*10; g=c/10; h=d*10; cout<<e+f+g+h; return 0; }