func_code_string: #include <bits/stdc++.h>   using namespace std;   const int inf = (int)1e9 + 100;   const long double eps = 1e-11;   const long double pi = acos(-1.0L);   int myrand() { return rand(); }   unsigned rdtsc() {     unsigned ans;     asm( rdtsc  :  =a (ans));     return ans;   }   int rnd(int x) { return myrand() % x; }   void precalc() {}   int n, k;   int a, b, c, d;   bool read() {     if (scanf( %d%d , &n, &k) < 2) {       return false;     }     scanf( %d%d%d%d , &a, &b, &c, &d);     return true;   }   void solve() {     if (n <= 4 || k < n + 1) {       printf( -1 n );       return;     }     vector<int> path;     for (int i = 1; i <= n; i++) {       if (i != a && i != b && i != c && i != d) {         path.push_back(i);       }     }     printf( %d %d  , a, c);     for (int i = 0; i < ((int)((path).size())); i++) {       printf( %d  , path[i]);     }     printf( %d %d n , d, b);     printf( %d %d  , c, a);     for (int i = 0; i < ((int)((path).size())); i++) {       printf( %d  , path[i]);     }     printf( %d %d n , b, d);   }   int main() {     srand(rdtsc());     precalc();     while (true) {       if (!read()) {         break;       }       solve();     }     return 0;   }   