func_code_string: #include <bits/stdc++.h>   using namespace std;   long long a, b;   bool used[1000005];   int main() {     cin >> a >> b;     long long max_num = 0, s = 0, max_id;     for (;; max_num++) {       if (s + max_num + 1 > a + b) break;       s += max_num + 1;       max_id = max_num;     }     s = 0;     int cnt = 0;     for (long long i = max_num + 1; i > 1; i--) {       if (s + i - 1 > a) {         used[a - s] = 1;         if (a - s) cnt++;         break;       }       used[i - 1] = 1;       cnt++;       s += i - 1;     }     cout << cnt <<   n ;     for (int i = 1; i <= max_num; i++) {       if (used[i]) {         cout << i <<    ;       }     }     cout <<   n  << max_num - cnt <<   n ;     for (int i = 1; i <= max_num; i++) {       if (!used[i]) {         cout << i <<    ;       }     }   }   