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).
from sys import stdin,exit
t,sx,sy,ex,ey=map(int,stdin.readline().split())
a=ex-sx
b=ey-sy
n,s,e,w=0,0,0,0
if a<0:
    w=a
else:
    e=a
if b<0:
    s=b
else:
    n=b
r=stdin.readline().rstrip()
c=0
for i in range(t):
    if r[i]=='W' and w!=0:
        w+=1
        c+=1
    elif r[i]=='E' and e!=0:
        e-=1
        c+=1
    elif r[i]=='S' and s!=0:
        s+=1
        c+=1
    elif r[i]=='N' and n!=0:
        n-=1
        c+=1
    else:
        if n==0 and s==0 and w==0 and e==0:
            break
        c+=1
    if i==t-1 and (n!=0 or s!=0 or e!=0 or w!=0):
        print(-1)
        exit()
print(c)