#include <iostream> using namespace std; int main(){ int n = 0, m; int a[8]; for(int i = 1;i <= 7;i++) { cin >> a[i]; } for(int i = 1;i <= 7;i++) { if(a[i] != 0) { n += a[i] * i; } } for(int i = 7;i >= 1;i--) { if(a[i] > 0) { n += i * a[1]; break; } } cout << n; return 0; }