package main

import (
	"fmt"
	"math/big"
)

func main() {
	var A, B string
	fmt.Scan(&A, &B)

	a, _ := new(big.Int).SetString(A, 10)
	b, _ := new(big.Int).SetString(B, 10)

	fmt.Println(a.Add(a, b))
}