def resolve():
    S = input()
    print("x"*len(S))

if '__main__' == __name__:
    resolve() def resolve():
    S = input()
    print("x"*len(S)) resolve S = input() S input() input print("x"*len(S)) print "x"*len(S) "x" len(S) len S if '__main__' == __name__:
    resolve() '__main__' == __name__ '__main__' __name__ resolve() resolve def resolve():
    S = input()
    print("x"*len(S)) def resolve():
    S = input()
    print("x"*len(S)) resolve
def resolve():
    S = input()
    print("x"*len(S))

if '__main__' == __name__:
    resolve()