// No.721 Die tertia (ディエ・テルツィア)
package main

import (
	"fmt"
	"strconv"
	"strings"
	"time"
)

func main() {
	var s string
	fmt.Scan(&s)
	ss := strings.Split(s, "/")
	y, _ := strconv.Atoi(ss[0])
	m, _ := strconv.Atoi(ss[1])
	d, _ := strconv.Atoi(ss[2])
	t := time.Date(y, time.Month(m), d, 0, 0, 0, 0, time.Local)
	fmt.Println(t.AddDate(0, 0, 2).Format("2006/01/02"))
}