func_code_string: #include <bits/stdc++.h>   using namespace std;   unsigned long long A, B, D;   int a[70], b[70], len1, len2;   int main() {     cin >> A >> B;     D = A - B;     unsigned long long temp = A;     if (A < B) {       cout << -1 << endl;       return 0;     }     while (A) {       a[len1++] = A % 2;       A /= 2;     }     while (B) {       b[len2++] = B % 2;       B /= 2;     }     unsigned long long res = 0;     for (int i = len1 - 1; i >= 0; --i) {       if (!b[i]) {         unsigned long long n = (1ULL << i);         if (n <= D / 2.0) {           D -= 2 * n;           res += n;         }       }     }     if (D) {       cout << -1 << endl;       return 0;     }     cout << res <<     << temp - res << endl;     return 0;   }   