The polar bears are going fishing. They plan to sail from (*s*<sub class="lower-index">*x*</sub>, *s*<sub class="lower-index">*y*</sub>) to (*e*<sub class="lower-index">*x*</sub>, *e*<sub class="lower-index">*y*</sub>). However, the boat can only sail by wind. At each second, the wind blows in one of these directions: east, south, west or north. Assume the boat is currently at (*x*, *y*).
 -  If the wind blows to the east, the boat will move to (*x* + 1, *y*). -  If the wind blows to the south, the boat will move to (*x*, *y* - 1). -  If the wind blows to the west, the boat will move to (*x* - 1, *y*). -  If the wind blows to the north, the boat will move to (*x*, *y* + 1). 
Alternatively, they can hold the boat by the anchor. In this case, the boat stays at (*x*, *y*). Given the wind direction for *t* seconds, what is the earliest time they sail to (*e*<sub class="lower-index">*x*</sub>, *e*<sub class="lower-index">*y*</sub>)?
The first line contains five integers *t*, *s*<sub class="lower-index">*x*</sub>, *s*<sub class="lower-index">*y*</sub>, *e*<sub class="lower-index">*x*</sub>, *e*<sub class="lower-index">*y*</sub> (1 ≤ *t* ≤ 10<sup class="upper-index">5</sup>,  - 10<sup class="upper-index">9</sup> ≤ *s*<sub class="lower-index">*x*</sub>, *s*<sub class="lower-index">*y*</sub>, *e*<sub class="lower-index">*x*</sub>, *e*<sub class="lower-index">*y*</sub> ≤ 10<sup class="upper-index">9</sup>). The starting location and the ending location will be different.

The second line contains *t* characters, the *i*-th character is the wind blowing direction at the *i*-th second. It will be one of the four possibilities: "E" (east), "S" (south), "W" (west) and "N" (north).
'''
INPUT SHORTCUTS
N, K = map(int,input().split())
N ,A,B = map(int,input().split())
string = str(input())
arr = list(map(int,input().split()))
N = int(input())
'''


def main(inp,arr):
	N = inp[0]
	x1,y1 = inp[1],inp[2]
	x2,y2 = inp[3],inp[4]
	diffx = x2-x1
	diffy = y2-y1
	cnt = 0
	flag = False
	for x in arr:
		if x=="N":
			# print(1)
			if diffy>0:
				diffy-=1
		elif x=="S":
			if diffy<0:
				diffy+=1
		elif x=="W":
			if diffx<0:
				diffx+=1
		elif x=="E":
			if diffx>0:
				diffx-=1
		cnt+=1
		if diffx==0 and diffy==0:
			flag = True
			break
	if flag:
		print(cnt)
	else:
		print(-1)



def text():
	with open("input.txt","r") as f:
		t = int(f.readline().rstrip())
		while t:
			inp = list(map(int,f.readline().rstrip().split()))
			string = str(f.readline().rstrip())
			string = list(string)
			main(inp,string)
			t-=1

def normal():
	inp = map(int,input().split())
	string = str(input())
	string = list(string)
	main(inp,string)



# text()

normal()

