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
10 5 3 3 6
NENSWESNEE


'''

t, sx, sy, ex, ey = map(int, input().split())
s = str(input())

dy = ey-sy
dx = ex-sx

N = S = E = W = 0

if dy>=0:
	N = dy
else:
	S = dy

if dx>=0:
	E = dx
else:
	W = dx

# print(N,S,W,E)
i = 0
while (N != 0 or S != 0 or E != 0 or W != 0) and i<len(s):
	if s[i] == 'N' and N>0:
		N -= 1
	if s[i] == 'S' and S>0:
		S -= 1
	if s[i] == 'E' and E>0:
		E -= 1
	if s[i] == 'W' and W>0:
		W -= 1


	i += 1
if N==0 and S==0 and W==0 and E==0:
	print(i)
else:
	print(-1)
