package com;

import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

public class cifafenxi {

	static Scanner sc = new Scanner(System.in);

	private static List<String> Operators;
	private static List<String> Spaces;

	static {

		String[] operatorArr = { "+", "-", "*", "/", "%", "=", ">", "<", "&", "^" };
		Operators = Arrays.asList(operatorArr);

		String[] SpaceArr = { " ", "\t", "\n" };
		Spaces = Arrays.asList(SpaceArr);
	}

	static boolean isDelimiter = false;// 是否有分隔符

	static StringBuffer strb = new StringBuffer();

	public static void main(String[] args) {

		String inStr = "";

		while (!sc.hasNext("---")) {
			inStr = sc.nextLine();
			inStr = inStr + " ";
			for (char ch : inStr.toCharArray()) {
				match(ch);
			}
		}
	}

	static void match(char ch) {

		StringBuffer bouStrb = new StringBuffer();

		if (Spaces.indexOf(ch + "") >= 0) {// 是存在字符ch，存在返回true
			isDelimiter = true;
		}

		if (Operators.indexOf(ch + "") >= 0) {
			isDelimiter = true;
			bouStrb = new StringBuffer(ch + ""); // 操作符
		}

		if (isDelimiter) {
			if (strb.length() > 0) {
				if (strb.charAt(0) >= '0' && strb.charAt(0) <= '9') {
					System.out.println(strb); // 是常数
				}
			}
			if (bouStrb.length() > 0)
				System.out.println(bouStrb);
			strb.setLength(0);
			isDelimiter = false;
			return;
		}

		strb.append(ch);

	}

}