import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        String num1 = input.nextLine();
        String num2 = input.nextLine();
        String sum = add(num1, num2);
        System.out.println(sum);
    }

    /*
     * 1234567890123456789012345678901234567890.
     * 1234567890123456789012345678901234567890
     * 1000000000100000000010000000001000000000.
     * 1000000000100000000010000000001000000000
     */
    /*
     * 2234567890223456789022345678902234567890.
     * 223456789022345678902234567890223456789
     */

    private static String[] split(String str) {
        for (int i = 0; i < str.length(); i++) {
            if (str.charAt(i) == '.') {
                return new String[] { str.substring(0, i), str.substring(i + 1) };
            }
        }
        return new String[] { str, "" };
    }

    private static String add(String num1, String num2) {
        /*String[] number1 = num1.split("\\.");
        String[] number2 = num2.split("\\.");*/
        String[] number1 = split(num1);
        String[] number2 = split(num2);
        String nums1 = number1[0];
        String nums2 = number2[0];
        String dot1 = number1[1];
        String dot2 = number2[1];
        int dlength1 = dot1.length();
        int dlength2 = dot2.length();
        int min;
        int[] dnums = new int[dlength1 > dlength2 ? dlength1 : dlength2];
        if (dlength1 > dlength2) {
            min = dlength2;
            for (int i = min; i < dlength1; i++) {
                dnums[i] = dot1.charAt(i) - '0';
            }
        } else {
            min = dlength1;
            for (int i = min; i < dlength2; i++) {
                dnums[i] = dot2.charAt(i) - '0';
            }
        }
        min--;
        int top = 0;
        while (min >= 0) {
            int sum = (dot1.charAt(min) + dot2.charAt(min) + dnums[min] - 2 * '0');
            if (sum >= 10) {
                dnums[min] = sum % 10;
                if (min != 0) {
                    dnums[--min] = sum / 10;
                } else {
                    top = sum / 10;
                }
            } else {
                dnums[min--] = sum;
            }
        }

        int[] num = new int[(nums1.length() > nums2.length() ? nums1.length() : nums2.length()) + 1];
        int i = nums1.length() - 1;
        int j = nums2.length() - 1;
        int k = num.length - 1;
        num[k] = top;
        while (i >= 0 && j >= 0) {
            int sum = (nums1.charAt(i) + nums2.charAt(j) + num[k] - 2 * '0');
            if (sum >= 10) {
                num[k] = sum % 10;
                num[--k] = sum / 10;
            } else {
                num[k--] = sum;
            }
            i--;
            j--;
        }
        if (i < 0 || j >= 0) {
            while (j >= 0) {
                int sum = (nums2.charAt(j) + num[k]) - '0';
                if (sum >= 10) {
                    num[k] = sum % 10;
                    num[--k] = sum / 10;
                } else {
                    num[k--] = sum;
                }
                j--;
            }
        } else if (i >= 0 || j < 0) {
            while (i >= 0) {
                int sum = (nums1.charAt(i) + num[k]) - '0';
                if (sum >= 10) {
                    num[k] = sum % 10;
                    num[--k] = sum / 10;
                } else {
                    num[k--] = sum;
                }
                i--;
            }
        }
        StringBuilder sb = new StringBuilder();
        StringBuilder sb1 = new StringBuilder();
        boolean sign = false, sign1 = false;
        for (int s : num) {
            if (s != 0)
                sign = true;
            if (sign) {
                sb.append(s);
            }
        }
        for (int h = dnums.length - 1; h >= 0; h--) {
            if (dnums[h] != 0)
                sign1 = true;
            if (sign1) {
                sb1.append(dnums[h]);
                if (h == 0)
                    sb1.append(".");
            }
        }
        sb.append(sb1.reverse());
        return sb.toString();
    }
}