a = int(input())
b = int(input())
c = int(input())


    

temp = 0
temp2 = 0

if a+b+c<10 :
    print("-1")
else :
    if a < 10:
        temp = temp + a*300
        temp2 = temp2 + a
        if temp2 + b < 10:
            temp = temp + b*350
            temp2 = temp2 + b
            print(f"{temp+(10-temp2)*400}")
        else :
            print(f"{temp+(10-temp2)*350}")
    else :
        print("3000")