import sys
#input = sys.stdin.readline #文字列につけてはダメ
#input = sys.stdin.buffer.readline #文字列につけてはダメ
#sys.setrecursionlimit(1000000)
#import bisect
#import itertools
#import random
#from heapq import heapify, heappop, heappush
from collections import defaultdict 
#from collections import deque
#import copy
#import math
#from functools import lru_cache
#MOD = pow(10,9) + 7
#MOD = 998244353


def main():
    A = input()
    B = input()
    L = ['N', 'E', 'S', 'W']
    a = L.index(A)
    b = L.index(B)
    ans = b - a
    if ans < 0: ans += 4
    print(ans)

if __name__ == '__main__':
    main()