SB = input()
N = int(input())
SA = input()

if SB.count("x") != SA.count("x"):
    print("SUCCESS")
    exit()
if N == 0 and SB != SA:
    print("SUCCESS")
    exit()
if N == 2:
    print("FAILURE")
    exit()
if N == 1:
    if SB[0] == SA[2] or SB[2] == SA[0]:
        print("SUCCESS")
        exit()
print("FAILURE")