625 B | 625 chars
import sys
from math import sqrt, pi, sin, factorial, ceil, floor
from datetime import datetime, timedelta
BLANK = " "
#inp = input
inp = lambda : sys.stdin.readline()[:-1].strip()
mii = lambda x = BLANK : [*map(int,inp().split(x))]
mfi = lambda x = BLANK : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
p = print
def f(a):
if a[0] == 'AD':
return int(a[1])
else:
return -int(a[0]) + 1
def solve():
a = input().split()
b = input().split()
a = f(a)
b = f(b)
p(abs(b - a))
if __name__ == "__main__":
tc = 1
for t in range(1, tc+1):
ret = solve()