# include<iostream> using namespace std; int main(){ int n,k,sum=0,max=0; int a[8]={0,1,2,3,4,5,6,7}; int b[8]; for(int i=1;i<=7;i++){ cin>>b[i]; } for(int i=7;i>=2;i--){ if(b[i]!=0){ max=i; break; } } sum+=b[1]*max; for(int i=1;i<=7;i++){ sum+=a[i]*b[i]; } cout<<sum; return 0; }