#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; cin>>a>>b>>c; if(a%4==0) cout<<a; else if(b%4==0) cout<<b; else if(c%4==0) cout<<b; else if(b%4==0&&a%4==0) cout<<b<<a; else if(b%4==0&&c%4==0) cout<<b<<c; else cout<<c<<a; return 0; }