import std.stdio, std.string, std.conv; import std.range, std.algorithm, std.array, std.typecons, std.container; import std.math, std.numeric, core.bitop; void main() { long k; scan(k); if (k == 0) { writeln(1); writeln(0); return; } foreach (os ; 1 .. 31) { long ot = (os * (os - 1)) / 2; foreach (zs ; 0 .. 31 - os) { long tt = ot * 2^^zs; if (tt == k) { writeln(os + zs); writefln("%(%s %)", repeat(1, os).array ~ repeat(0, zs).array); return; } } } } void scan(T...)(ref T args) { import std.stdio : readln; import std.algorithm : splitter; import std.conv : to; import std.range.primitives; auto line = readln().splitter(); foreach (ref arg; args) { arg = line.front.to!(typeof(arg)); line.popFront(); } assert(line.empty); } void fillAll(R, T)(ref R arr, T value) { static if (is(typeof(arr[] = value))) { arr[] = value; } else { foreach (ref e; arr) { fillAll(e, value); } } }