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).
L = list(map(int,input().split()))
t = L[0]
sx = L[1]
sy = L[2]
ex = L[3]
ey = L[4]
s = str(input())

# print(t,sx,sy,ex,ey,s)
if sx < ex: #head east as x = x+1
    xhead = (ex-sx)*'E'
else:
    xhead = (sx-ex)*'W'

if sy < ey:
    yhead = (ey-sy)*'N'
else:
    yhead = (sy-ey)*'S'

# print(xhead,yhead)

for i in range(len(s)):
    if len(xhead) == 0 and len(yhead) == 0:
        break

    if not(len(xhead) == 0) and s[i] == xhead[0]:
        xhead = xhead[:-1]
    
    if not(len(yhead) == 0) and s[i] == yhead[0]:
        yhead = yhead[:-1]
    
if len(xhead) == 0 and len(yhead) == 0:
    print(i)
else:
    print(-1)
    