import sys

input = lambda: sys.stdin.readline().rstrip()


def solve():
    n = len(input())
    ans = 'x' * n
    print(ans)


if __name__ == '__main__':
    solve() import sys sys input = lambda: sys.stdin.readline().rstrip() input lambda: sys.stdin.readline().rstrip() sys.stdin.readline().rstrip() sys.stdin.readline().rstrip sys.stdin.readline() sys.stdin.readline sys.stdin sys stdin readline rstrip def solve():
    n = len(input())
    ans = 'x' * n
    print(ans) solve n = len(input()) n len(input()) len input() input ans = 'x' * n ans 'x' * n 'x' n print(ans) print ans if __name__ == '__main__':
    solve() __name__ == '__main__' __name__ '__main__' solve() solve def solve():
    n = len(input())
    ans = 'x' * n
    print(ans) def solve():
    n = len(input())
    ans = 'x' * n
    print(ans) solve input = lambda: sys.stdin.readline().rstrip() lambda: sys.stdin.readline().rstrip() input
import sys

input = lambda: sys.stdin.readline().rstrip()


def solve():
    n = len(input())
    ans = 'x' * n
    print(ans)


if __name__ == '__main__':
    solve()
