package main

import (
	b "bufio"
	"os"
)

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