package mainimport bufio;fmt;os;strconvfunc main reader = bufioNewReaderosStdin l _ _ = readerReadLine var t n s m int t _ = strconvAtoistringl for i = 0; i t; i++ l _ _ = readerReadLine nums = i

package main

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

func main() { reader := bufio.NewReader(os.Stdin) l, _, _ := reader.ReadLine() t, _ := strconv.Atoi(string(l))

for i := 0; i < t; i++ {
	l, _, _ = reader.ReadLine()
	numsStr := strings.Split(string(l), " ")
	nums := []int{}
	for _, numStr := range numsStr {
		num, _ := strconv.Atoi(numStr)
		nums = append(nums, num)
	}
	n, s := nums[0], nums[1]
	for j := 0; j < n; j++ {
		l, _, _ = reader.ReadLine()
		num, _ := strconv.Atoi(string(l))
		s -= num
	}
	if s == 0 {
		fmt.Println("YES")
	} else {
		fmt.Println("NO")
	}
}