#include<iostream> using namespace std; int main(){ int a,b,c,d,e,f,g,h,i,j; cin>>a>>b>>c>>d>>e>>f>>g>>h>>i>>j; cout<<a*28.9+b*32.7+c*45.6+d*78+e*35+f*86.2+g*27.8+h*43+i*56+j*65; return 0; }