import java.math.BigDecimal;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		while (sc.hasNext()) {
			BigDecimal A = new BigDecimal(sc.next());
			BigDecimal B = new BigDecimal(sc.next());
			BigDecimal C = A.add(B);
			if (C.compareTo(BigDecimal.ZERO) == 0) {
				System.out.println(0);
			} else if (C.setScale(0, BigDecimal.ROUND_HALF_UP).subtract(C).compareTo(BigDecimal.ZERO) == 0) {
				System.out.println(C.toPlainString());
			} else {
				String num = C.toPlainString();
				while(num.substring(num.length()-1).equals("0")) {
					num=num.substring(0,num.length()-1);
				}
				int index = num.indexOf(".");
				if (C.compareTo(BigDecimal.ZERO) < 0) {
					if (C.compareTo(new BigDecimal("-1")) > 0) {
						int exp = -1;
						System.out.printf("-%s.%se%d\n", num.substring(3, 4), num.replace(".", "").substring(3), exp);
					} else {
						int exp = index - 2;
						System.out.printf("-%s.%se%d\n", num.substring(1, 2), num.replace(".", "").substring(2), exp);
					}
				} else {
					if (C.compareTo(new BigDecimal("1")) < 0) {
						int key = 0;
						for (int i = index + 1; i < num.length(); i++) {
							if (num.charAt(i) != '0') {
								key = i;
								break;
							}
						}
						int exp = index - key;
						System.out.printf("%s.%se%d\n", num.substring(key, key + 1),
								num.replace(".", "").substring(key), exp);
					} else {
						int exp = index - 1;
						System.out.printf("%s.%se%d\n", num.substring(0, 1), num.replace(".", "").substring(1), exp);
					}
				}
			}
		}
		sc.close();
	}
}

/**************************************************************
	Problem: 2208
	User: admin
	Language: Java
	Result: Accepted
	Time:870 ms
	Memory:42028 kb
****************************************************************/