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import java.util.Scanner;import javax.swing.text.html.HTMLDocument.HTMLReader.IsindexAction;public class Main {
       public static String add(String str1, String str2) {        if (str1.length() < str2.length()) {            String temp = str1;            str1 = str2;            str2 = temp;        }        int index = 0;        int flag = 0;        char[] result = new char[str1.length() > str2.length() ? str1.length()                : str2.length()];        while (str1.length() > index && str2.length() > index) {            int sum = str1.charAt(str1.length() - index - 1)                    + str2.charAt(str2.length() - index - 1) - '0' + flag;            if (sum > '9') {                result[result.length - index - 1] = (char) (sum - 10);                flag = 1;            } else {                result[result.length - index - 1] = (char) sum;                flag = 0;            }            index++;        }        if (str1.length() >= index) {            for (int i = index; i < str1.length(); i++) {                int sum = str1.charAt(str1.length() - index - 1) + flag;                if (sum > '9') {                    result[result.length - index - 1] = (char)(sum - 10);                    flag = 1;                }else {                    result[result.length - index - 1] = (char)(sum);                    flag = 0;                }                index++;            }        }        if (flag == 1) {            return "1" + new String(result);        }else {            return new String(result);        }    }    public static String subtract(String str1, String str2){        String sign = "";        if (str1.length() < str2.length()) {            String temp = str1;            str1 = str2;            str2 = temp;            sign = "-";        }else if (str1.length() == str2.length()) {            if (str1.compareTo(str2)<0) {                String temp = str1;                str1 = str2;                str2 = temp;                sign = "-";            }        }        int index = 0;        int flag = 0;        char[] result = new char[str1.length()>str2.length()?str1.length():str2.length()];        while (str1.length()>index && str2.length()>index) {            int sum = str1.charAt(str1.length()-index-1)-str2.charAt(str2.length()-index-1)+'0' - flag;            if (sum<'0') {                flag = 1;                result[result.length-index-1] = (char)(sum + 10);            }else {                flag = 0;                result[result.length-index-1] = (char)(sum);            }            index++;        }        if (str1.length()>=index) {            for (int i = index; i < str1.length(); i++) {                int sum = (char)(str1.charAt(str1.length()-index-1)-flag);                if (sum<'0') {                    result[result.length-index-1] = (char)(sum+10);                    flag = 1;                }else {                    result[result.length-index-1] = (char)sum;                    flag = 0;                }                index++;            }        }        return sign + new String(result);    }    public static void main(String[] args) {        Scanner scanner = new Scanner(System.in);        String str1 = scanner.next();        String str2 = scanner.next();        if (str1.contains("-") && str2.contains("-")) {            System.out.println("-"                    + add(str1.substring(1), str2.substring(1)));        } else if (!str1.contains("-") && !str2.contains("-")) {            System.out.println(add(str1, str2));        } else {            String result = "";            if (str1.contains("-")) {                result = subtract(str2,str1.substring(1)).replace("0", "");                if (result.length() == 0) {                    result = "0";                }                System.out.println(result);            } else {                result = subtract(str1, str2.substring(1)).replace("0", "");                if (result.length() == 0) {                    result = "0";                }                System.out.println(result);            }        }    }}

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