Untitled

#include <iostream>
#include <algorithm>

using namespace std;

int main() {
    int carry = 0;
    int tempA, tempB;
    string res = "";
    cin >> tempA;
    cin >> tempB;
    
    while (tempA > 0 || tempB > 0 || carry == 1) {
        int sum = 0;
        
        if (tempA > 0) {
            sum += tempA % 2;
        }
        
        if (tempB > 0) {
            sum += tempB % 2;
        }
        
        sum += carry;
        
        if (sum>=2) {
            carry = 1;
            
            if (sum == 3) {
                res += '1';
            } else {
                res += '0';
            }
        } else {
            res += to_string(sum);
            carry = 0;
        }
        
        tempA /= 10;
        tempB /= 10;
    }

    reverse(res.begin(), res.end());
    if (res.length() == 0) { 
        cout << 0 << endl;
    } else {
        cout << stoi(res) << endl;
    }
    
    return 0;
}