https://statement.bacs.cs.istu.ru/statement/text_get/cGFja2FnZTogJ2JhY3MvcHJvYmxlbS9zY2hvb2xfN18zXzVfYXBsdXNiX2hhcmRfazFfZW5nL3N0YXRlbWVudC92ZXJzaW9ucy9DL2h0bWwnIHJldmlzaW9uOiB7IHZhbHVlOiAiPmhcdEEiIH0/bacs.legacy/ocqbSnHp_Jht8uZrgckQsw6yI3g1tfST8pJ_1HshVN1HaS0CgLcKGuhHffTayALvYVM0N7t1hS02uxmqlJ1dlKvJqiwgq1cXZ5Wa7UuEHKiTzZBeScN48TJxZE1bF2OIS3TWvw6LmXqAxPubBFFLwKmR-Vo6HExxs5YU6JkirKxwBIhxFgCT9cWPhFrTsvvZS4blavXGjBCCpA7Bgm5PVWLBBm-MNu1IOodPZyWH8JDtUMLybzX5xb-2uSEJFd5ou6mgtDXlWWzj3HumaXbTc4c_lc3gTpUgwsqGsU7A_0KXsBiV5W1uMonqR3zHMTHFhjC2H-xe9jUiNoEAFNH0Jw/statement.html

#include <iostream>

using namespace std;
//слава иисусу христу
int main()
{
    int a, b, sum = 0, sum2 = 0, sum3, c, d;
    int k = 0, m = 0;
    cin >> a >> b;
    sum3 = a + b;
    c = a;
    d = b;
    while (a > 0) {
        sum+=a%10;
        a/=10;
    }
    while (b > 0) {
        sum2+=b%10;
        b/=10;
    }
    for (int i = 0; i < 3; i++) {
        if (c%10 == 0) continue;
        if (sum%(c%10) == 0) k++;
        c/=10;
    }
    for (int i = 0; i < 3; i++) {
        if (d%10 == 0) continue;
        if (sum2%(d%10) == 0) m++;
        d/=10;
    }
    if ((k > 0) and (m > 0)) cout << sum + sum2;
    else cout << sum3;
    return 0;
}