#include<bits/stdc++.h> using namespace std; int n,t,s,c,i; int main(){ cin>>n; for(i=0;i<n;i++){ cin>>t; c=1; if(t%2){ while(t){ s+=t%10; t/=10; } continue; } while(t){ c*=t%10; t/=10; } s+=c; } cout<<s; return 0; }