func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 4 * 1e5 + 5;   vector<int> g[N];   int n, dp[N], res[N];   int dfs(int i, int p = -1) {     dp[i] = 1;     for (auto j : g[i]) {       if (j != p) {         dp[i] += dfs(j, i);       }     }     return dp[i];   }   int dfs2(int i, int p = -1) {     for (auto j : g[i]) {       if (j != p && dp[j] * 2 > n) {         return dfs2(j, i);       }     }     return i;   }   void dfs3(int i, int p, int c1, int c2) {     if (c1 * 2 >= n) res[i] = 1;     if ((dp[i] + c2) * 2 >= n) res[i] = 1;     for (auto j : g[i]) {       if (j != p) {         dfs3(j, i, c1, c2);       }     }   }   int main() {     std::ios::sync_with_stdio(false);     cin >> n;     for (int i = 1; i < n; ++i) {       int a, b;       cin >> a >> b;       --a;       --b;       g[a].push_back(b);       g[b].push_back(a);     }     dfs(0);     int a = dfs2(0);     dfs(a);     res[a] = 1;     int mx = -1, mx2 = -1, v;     for (auto j : g[a]) {       if (dp[j] > mx) {         mx2 = mx;         mx = dp[j];         v = j;       } else if (dp[j] > mx2) {         mx2 = dp[j];       }     }     for (auto j : g[a]) {       if (j == v)         dfs3(j, a, dp[j], mx2);       else         dfs3(j, a, dp[j], mx);     }     for (int i = 0; i < n; ++i) cout << res[i] <<    ;     return 0;   }   