func_code_string: #include <bits/stdc++.h>   using namespace std;   const int inf = 0x3f3f3f3f;   const long long inf2 = 0x3f3f3f3f3f3f3f3f;   const double eps = 1e-6;   const int mod = 1000000007;   namespace fastio {   char in[100000];   int itr = 0, llen = 0;   char get() {     if (itr == llen) llen = fread(in, 1, 100000, stdin), itr = 0;     if (llen == 0) return EOF;     return in[itr++];   }   char out[100000];   int itr2 = 0;   void put(char c) {     out[itr2++] = c;     if (itr2 == 100000) {       fwrite(out, 1, 100000, stdout);       itr2 = 0;     }   }   int clear() {     fwrite(out, 1, itr2, stdout);     itr2 = 0;     return 0;   }   int getint() {     int r = 0;     bool ng = 0;     char c;     c = get();     while (c !=  -  && (c <  0  || c >  9 )) c = get();     if (c ==  - ) ng = 1, c = get();     while (c >=  0  && c <=  9 ) r = r * 10 + c -  0 , c = get();     return ng ? -r : r;   }   string getstr() {     string ret =   ;     char ch = get();     while (ch ==     || ch ==   n ) ch = get();     while (ch !=     && ch !=   n ) ret.push_back(ch), ch = get();     return ret;   }   void putstr(string s) {     for (int i = 0; i < s.size(); i++) put(s[i]);   }   void putint(int x) {     if (x < 0) {       put( - );       x = -x;     }     if (x == 0) {       put( 0 );       return;     }     char c[20];     int pos = 0;     while (x) {       c[pos++] =  0  + x % 10;       x /= 10;     }     for (int i = pos - 1; i >= 0; i--) put(c[i]);   }   void getarr(int arrname[], int size) {     for (int i = 0; i < size; i++) arrname[i] = getint();   }   }  // namespace fastio   using namespace fastio;   int number[1000005], BITN = 1e6;   void modify(int x, int y) {     while (x <= BITN) {       number[x] += y;       x += x & -x;     }   }   int sum(int x) {     int ret = 0;     while (x) {       ret += number[x];       x &= x - 1;     }     return ret;   }   void add(int l, int r, int v) {     modify(l, v);     modify(r, -v);   }   int qry(int x) { return sum(x); }   int n, k;   vector<int> g[1000005];   vector<int> ord;   int pos[1000005];   bool used[1000005];   int par[1000005];   int sz[1000005], depth[1000005];   void dfs(int x, int pr) {     depth[x] = x == n ? 0 : depth[pr] + 1;     pos[x] = ord.size() + 1;     ord.push_back(x);     sz[x] = 1;     for (auto to : g[x])       if (to != pr) par[to] = x, dfs(to, x), sz[x] += sz[to];   }   int main() {     n = getint();     k = getint();     for (int i = 1; i < n; i++) {       int a = getint(), b = getint();       g[a].push_back(b);       g[b].push_back(a);     }     dfs(n, 0);     for (int i = 0; i < ord.size(); i++) {       modify(i + 1, depth[ord[i]] - (i == 0 ? 0 : depth[ord[i - 1]]));     }     used[n] = true;     int rest = n - k - 1;     for (int v = n - 1; v > 0 && rest; v--) {       if (used[v]) continue;       int len = qry(pos[v]);       if (len <= rest) {         int cur = v;         while (!used[cur]) {           used[cur] = true;           add(pos[cur], pos[cur] + sz[cur], -1);           cur = par[cur];           rest--;         }       }     }     vector<int> ans;     for (int i = 1; i <= n; i++)       if (!used[i]) ans.push_back(i);     for (int i = 0; i < ans.size(); i++) putint(ans[i]), put(   );     clear();     return 0;   }   