[email protected]

package main

import (
	"bufio"
	"fmt"
	"os"
	"strings"
)

func main() {
	var f int = 0
	var index int
	reader := bufio.NewReader(os.Stdin)
	x, _ := reader.ReadString('\n')
	// convert CRLF to LF
	x = strings.Replace(x, "\n", "", -1)
	y, _ := reader.ReadString('\n')
	// convert CRLF to LF
	y = strings.Replace(y, "\n", "", -1)

	for index, _ = range x {
		if x[index] == y[0] {
			f = 1
			for i, _ := range y {
				if x[index+i] != y[i] {
					f = 0
					break
				}
			}
		}
		if f == 1 {
			break
		}
	}

	if f == 1 {
		fmt.Print(index)
	} else {
		fmt.Print("-1")
	}
}