For problem statement at 1000-1999/1100-1199/1150-1159/1155/problemC.txt this is a correct solution, but verifier at 1000-1999/1100-1199/1150-1159/1155/verifierC.go ends with All tests passed can you fix the verifier? ```go
package main

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

func gcd(a, b int64) int64 {
	for b != 0 {
		a, b = b, a%b
	}
	if a < 0 {
		return -a
	}
	return a
}

func main() {
	in := bufio.NewReaderSize(os.Stdin, 1<<20)

	var n, m int
	if _, err := fmt.Fscan(in, &n, &m); err != nil {
		return
	}

	x := make([]int64, n)
	for i := 0; i < n; i++ {
		fmt.Fscan(in, &x[i])
	}

	ps := make([]int64, m)
	for j := 0; j < m; j++ {
		fmt.Fscan(in, &ps[j])
	}

	var g int64 = 0
	base := x[0]
	for i := 1; i < n; i++ {
		g = gcd(g, x[i]-base)
	}

	for j := 0; j < m; j++ {
		if g%ps[j] == 0 {
			fmt.Println("YES")
			fmt.Printf("%d %d\n", base, j+1)
			return
		}
	}
	fmt.Println("NO")
}
```