import std;

auto input()
{
    return readln().chomp();
}

alias sread = () => readln.chomp();
alias aryread(T = long) = () => readln.split.to!(T[]);

void main()
{
    string s;
    s = input();
    foreach (_; 0 .. s.length)
    {
        write('x');
    }

}

void scan(L...)(ref L A)
{
    auto l = readln.split;
    foreach (i, T; L)
    {
        A[i] = l[i].to!T;
    }
}
