INF = 10 ** 7
import sys
input = sys.stdin.readline
sys.setrecursionlimit(100000000)
dy = (-1,0,1,0)
dx = (0,1,0,-1)

def main():
    x,y,z = map(int,input().split())
    s = input().split()
    g = input().split()
    ss = s[0]
    si = int(s[1])
    gs = g[0]
    gi = int(g[1])

    if ss == 'A' and gs == 'B':
        ans = min(si + gi - 1,si + z + y - gi,x - si + y - gi + 1,x - si + z + gi)
    elif ss == 'A' and gs == 'C':
        ans = min(si + gi - 1,si + y + z - gi,x - si + z - gi + 1,x - si + y + gi)
    elif ss == 'A' and gs == 'A':
        if si >= gi:
            si,gi = gi,si
        ans = min(gi - si,si + min(y,z) + x - gi)
    
    elif ss == 'B' and gs == 'C':
        ans = min(si + gi - 1,si + x + z - gi,y - si + z - gi + 1,y - si + x + gi)
    elif ss == 'B' and gs == 'A':
        ans = min(si + gi - 1,si + z + x - gi,y - si + x - gi + 1,y - si + z + gi)
    elif ss == 'B' and gs == 'B':
        if si >= gi:
            si,gi = gi,si
        ans = min(gi - si,si + min(x,z) + y - gi)
    
    elif ss == 'C' and gs == 'A':
        ans = min(si + gi - 1,si + x + y - gi,z - si + x - gi + 1,z - si + y + gi)
    elif ss == 'C' and gs == 'B':
        ans = min(si + gi - 1,si + y + x - gi,z - si + y - gi + 1,z - si + x + gi)
    elif ss == 'C' and gs == 'C':
        if si >= gi:
            si,gi = gi,si
        ans = min(gi - si,si + min(x,y) + z - gi)
    
    print(ans)

if __name__ == '__main__':
    main()