package main

import . "fmt"
import . "math/big"

func main() {
	var a, b string
	Scan(&a,&b)
	if '0' <= b[0] && b[0] <= '9' {
		n := new(Int)
		Sscanf(a+b,"%d", n)
		Println(n)
	} else {
		x,y:=new(Int),new(Int)
		Sscanf(a, "%d", x)
		Sscanf(b, "%d", y)
		Println(x.Add(x,y))
	}
}