60

#include <bits/stdc++.h>
using namespace std;
 
int main() {
    string s1, s2;
    cin >> s1 >> s2;
    if (s1 == "0" || s2 == "0") {
        cout << (s1 == "0" ? s2 : s1) << endl;
        return 0;
    }
    int i = s1.size() - 1, j = s2.size() - 1;
    int carry = 0;
    string result = "";
    while (i >= 0 || j >= 0 || carry) {
        int num1 = (i >= 0) ? s1[i--] - '0' : 0;
        int num2 = (j >= 0) ? s2[j--] - '0' : 0;
        int sum = num1 + num2 + carry;
        carry = sum / 10;
        result += ('0' + (sum % 10));
    }
    reverse(result.begin(), result.end());
    cout << result << endl;
    
    return 0;
}