x, y, z = map(int, input().split())
S0, t0 = input().split()
t0 = int(t0)
S1, t1 = input().split()
t1 = int(t1)

if S0 == S1:
    print(abs(t0 - t1))
else:
    if t0 == t1:
        print(1)
    else:
        print(2)