func_code_string: #include <bits/stdc++.h>   using namespace std;   bool life[1000005];   int main() {     long long a, b;     int l, r, mid;     int ans, cnt = 0;     scanf( %lld%lld , &a, &b);     l = 0;     r = 1000000007;     while (l != r) {       mid = (r + l + 1) / 2;       if (((mid + 1LL) * mid) / 2 > a + b)         r = mid - 1;       else         l = mid;     }     ans = l;     for (int i = l; i > 0; i--) {       if (a >= i) {         a -= i;         life[i] = 1;         cnt++;       }     }     printf( %d n , cnt);     if (cnt) {       for (int i = 1; i <= l; i++) {         if (life[i]) printf( %d  , i);       }       printf(  n );     }     printf( %d n , ans - cnt);     if (ans - cnt) {       for (int i = 1; i <= l; i++) {         if (!life[i]) printf( %d  , i);       }       printf(  n );     }     return 0;   }   