package main
import (
    b "bufio"
    "fmt"
    "os"
)
func main() {
	s := b.NewScanner(os.Stdin)
  for i := 0; i < 32; i++ {
		s.Scan()
    s := s.Text()
	  if s[1] == s[2] {
	    fmt.Print(s[2]-'0')
	  } else {
	    fmt.Print(s[4]-'0')
	  }
  }
}