package main
import (
    "fmt"
    "strconv"
)
func HpAdd(a string, b string) []int {
    cslice := make([]int, 0)
    t := 0
    aslice := make([]int, 0, len(a))
    bslice := make([]int, 0, len(b))
    for i := len(a) - 1; i >= 0; i-- {
        ai, _ := strconv.Atoi(string(a[i]))
        aslice = append(aslice, ai)
    }
    for i := len(b) - 1; i >= 0; i-- {
        bi, _ := strconv.Atoi(string(b[i]))
        bslice = append(bslice, bi)
    }
    for i := 0; i < len(aslice) || i < len(bslice); i++ {
        if i < len(aslice) {
            t += aslice[i]
        }
        if i < len(bslice) {
            t += bslice[i]
        }
        cslice = append(cslice, t%10)
        t /= 10
    }
    if t != 0 {
        cslice = append(cslice, t)
    }
    return cslice
}

func main() {
    var (
        a, b string
    )

    for  {
        _, err := fmt.Scan(&a, &b)
        if (err != nil) {
            break
        }
        c := HpAdd(a,b)
        for i:=len(c)-1;i>=0;i-- {x
            fmt.Printf("%d",c[i])
        }
        fmt.Printf("\n")
    }
}