func_code_string: #include <bits/stdc++.h>   using namespace std;   const double eps = 1e-9;   const double pi = acos(-1.0);   const int inf = 0x3f3f3f3f;   const long long oo = 1LL << 60;   const int N = 10010;   const int E = 200010;   class Graph {    public:     int pnt[E], nxt[E], id[E];     int head[N], nv, ne;     void init(const int v) {       nv = v;       ne = 0;       memset(head, 255, sizeof(head));     }     void add(const int u, const int v, const int i) {       pnt[ne] = v, id[ne] = i, nxt[ne] = head[u], head[u] = ne++;       pnt[ne] = u, id[ne] = i, nxt[ne] = head[v], head[v] = ne++;     }   } ga, gb;   int n, rt;   int dfn[N], low[N], idx;   int stk[N], top;   int belong[N], bcnt;   bool vis[N];   int cnt[N];   void dfs(const Graph &g, int u, int f) {     int i, v, e;     dfn[u] = low[u] = idx++;     stk[++top] = u;     vis[u] = 1;     for (i = g.head[u]; ~i; i = g.nxt[i]) {       v = g.pnt[i], e = g.id[i];       if (dfn[v] < 0) {         dfs(g, v, e);         low[u] = min(low[u], low[v]);       } else if (e != f && vis[v] && low[u] > dfn[v])         low[u] = dfn[v];     }     if (dfn[u] == low[u]) {       do {         v = stk[top--];         vis[v] = 0;         belong[v] = bcnt;       } while (v != u);       bcnt++;     }   }   void bcc(const Graph &g) {     top = bcnt = idx = 0;     memset(dfn, 255, sizeof(dfn));     memset(vis, 0, sizeof(vis));     for (int i = 0; i < g.nv; i++)       if (dfn[i] < 0) dfs(g, i, -1);   }   void find(const Graph &g) {     rt = -1;     int mm = -1;     memset(cnt, 0, sizeof(cnt));     for (int i = 0; i < g.nv; i++) cnt[belong[i]]++;     for (int i = 0; i < bcnt; i++)       if (cnt[i] > mm) {         mm = cnt[i];         rt = i;       }   }   void shrink(const Graph &ga, Graph &gb) {     int v, cnt = 1;     gb.init(bcnt);     for (int i = 0; i < ga.nv; i++)       for (int j = ga.head[i]; ~j; j = ga.nxt[j])         if (belong[i] != belong[v = ga.pnt[j]])           gb.add(belong[i], belong[v], cnt++);   }   bool in[N];   int Q[N], dist[N];   void spfa(const Graph &g, int src) {     int i, u, v, l, r = 0;     memset(dist, 63, sizeof(dist));     memset(in, 0, sizeof(in));     dist[Q[r++] = src] = 0;     in[src] = 1;     for (l = 0; l != r; l = (l + 1) % N)       for (i = g.head[u = Q[l]], in[u] = 0; ~i; i = g.nxt[i])         if (dist[v = g.pnt[i]] > dist[u] + 1) {           dist[v] = dist[u] + 1;           if (!in[v]) in[Q[r++] = v] = 1, r %= N;         }   }   int main(void) {     scanf( %d , &n);     ga.init(n);     for (int i = 1; i <= n; i++) {       int u, v;       scanf( %d%d , &u, &v);       ga.add(u - 1, v - 1, i);     }     bcc(ga);     find(ga);     shrink(ga, gb);     spfa(gb, rt);     for (int i = 0; i < ga.nv; i++)       printf( %d%c , dist[belong[i]], i == ga.nv - 1 ?   n  :    );     return 0;   }   