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).
t, s1, s2, e1, e2 = map(int, input().split())
wind = list(input())
north, south, east, west, seconds = 0, 0, 0, 0, 0
if e1-s1 > 0:
    east += e1-s1
elif e1-s1 < 0:
    west += abs(e1-s1)
if e2-s2 > 0:
    north += e2-s2
elif e2-s2 < 0:
    south += abs(e2-s2)
for i in range(len(wind)):
    if wind[i] == 'N' and north > 0:
        north -= 1
    elif wind[i] == 'E' and east > 0:
        east -= 1
    elif wind[i] == 'S' and south > 0:
        south -= 1
    elif wind[i] == 'W' and west > 0:
        west -= 1
    if north + south + east + west == 0:
        seconds += 1
        break
    elif north + south + east + west != 0 and i == len(wind)-1:
        seconds = -1
    else:
        seconds += 1 
print(seconds)
