n=list(map(int,input().split())) cost=0 s={1:28.9, 2:232.7, 3:345.6, 4:478, 5:535, 6:686.2, 7:727.8, 8:843, 9:956, 10:10*65} for i in n: cost+=s[i] print(f"{cost:.2f}")