class Ideone {
	public static void main(String[] args) {
		System.out.println(addSpaces("2057216345135157862323621293695559030383785129357667531585938249534612483932237388388135819035165204"));
	}
	private static String addSpaces(CharSequence input) {
		StringBuilder buf = new StringBuilder(input.length() * 7 / 5 + 1);
		for (int i = 0; i < input.length(); i++) {
			if (i != 0 && (i % 5 == 2 || i % 5 == 0))
				buf.append(' ');
			buf.append(input.charAt(i));
		}
		return buf.toString();
	}
}

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