import os
s = 'afci'
name = []
for x in os.listdir('.'):
    if os.path.isfile(x):
	    name = os.path.split(x)[1];
	    i = 0
	    j = 0
	    n = 0
	    while True:
	    	if name[i] == s[j]:
	    		j += 1
	    	i += 1
	    	if j == 4:
	    		print(x)
	    		break
	    	elif i >= len(name):
	    		break