func_code_string: #include <bits/stdc++.h>   const int N = 500005;   int to[N << 1], edge, Next[N << 1], last[N], n, x, y, d[N], mx1[N], mx2[N];   int f[N], fmx[N], ans1, mx[N], f0[N], f1[N], sum[N];   std::vector<int> e[N];   void upd(int &x, int y) {     if (y > x) x = y;   }   void add(int x, int y) {     to[++edge] = y;     Next[edge] = last[x];     last[x] = edge;   }   void dfs1(int x, int y) {     f[x] = y;     for (int i = last[x]; i; i = Next[i]) {       int u = to[i];       if (u == y) continue;       dfs1(u, x);       if (mx1[u] + 1 > mx1[x])         mx2[x] = mx1[x], mx1[x] = mx1[u] + 1;       else if (mx1[u] + 1 > mx2[x])         mx2[x] = mx1[u] + 1;     }   }   void dfs2(int x, int y) {     if (y) e[fmx[x]].push_back(x);     for (int i = last[x]; i; i = Next[i]) {       int u = to[i];       if (u == y) continue;       if (mx1[x] == mx1[u] + 1)         fmx[u] = std::max(mx2[x], fmx[x]) + 1;       else         fmx[u] = std::max(mx1[x], fmx[x]) + 1;       e[mx1[u] + 1].push_back(x);     }     for (int i = last[x]; i; i = Next[i])       if (to[i] != y) dfs2(to[i], x);   }   int main() {     scanf( %d , &n);     for (int i = 1; i < n; i++) {       scanf( %d%d , &x, &y);       add(x, y), add(y, x);       d[x]++, d[y]++;     }     for (int i = 1; i <= n; i++) upd(ans1, d[i] + 1);     dfs1(1, 0);     dfs2(1, 0);     f0[n] = f1[n] = 1;     for (int i = n; i >= 1; i--) {       int lst = 0;       for (auto u : e[i]) {         sum[u]++;         upd(f0[i], sum[u]);         upd(f1[i - 1], sum[u]);         if (lst != u) upd(f1[i], sum[u]);         upd(mx[f[u]], sum[u]);         upd(f0[i], sum[u] + mx[u] - 2);         if (f[u]) upd(f0[i], sum[u] + sum[f[u]] - 2);         lst = u;       }     }     for (int i = n; i >= 1; i--) upd(f0[i], f0[i + 1]), upd(f1[i], f1[i + 1]);     printf( %d  , ans1);     for (int i = 2; i <= n; i++)       if (i & 1)         printf( %d  , f1[i / 2]);       else         printf( %d  , f0[i / 2]);   }   