sb=list(input())
n=int(input())
sa=list(input())

if n==0 and sb!=sa:
  print('SUCCESS')
  exit()

if sb.count('o')!=sa.count('o'):
  print('SUCCESS')
  exit()

if sb.count('o')==0 or sb.count('o')==3:
  print('FAILURE')
  exit()

if sb.count('o')==1:
  if n>=2:
    print('FAILURE')
  else:
    if (sb==['o','x','x'] and sa==['x','x','o']) or (sa==['o','x','x'] and sb==['x','x','o']):
      print('SUCCESS')
    else:
      print('FAILURE')
  exit()

if sb.count('o')==2:
  if sb==['o','o','x']:
    if (n%2==1 and sa==['o','x','o']) or (n%2==0 and sa==['x','o','o']):
      print('FAILURE')
    else:
      print('SUCCESS')
  elif sb==['o','x','o']:
    if (n%2==1 and sa==['x','o','o']) or (n%2==1 and sa==['o','o','x']) or(n%2==0 and sa==['o','x','o']):
      print('FAILURE')
    else:
      print('SUCCESS')
  else:
    if (n%2==1 and sa==['o','x','o']) or (n%2==0 and sa==['o','o','x']):
      print('FAILURE')
    else:
      print('SUCCESS')