package main

import (
	"fmt"
)

func main() {
	var L1, L2, L3, R, B, Y int
	fmt.Scan(&L1, &L2, &L3, &R, &B, &Y)
	
	var ans int = 1<<29
	L := []int{L1,L2,L3}
	for i := 0; i < 3; i++ {
		for j := 0; j < 3; j++ {
			for k := 0; k < 3; k++ {
				if i != k && j != k && i != j {
					v := L[i] * (R + Y) + L[j] * (R + B) + L[k] * (B + Y)
					if v < ans {
						ans = v
					}
				}
			}
		}
	}
	fmt.Println(2 * ans)
}