func_code_string: #include <bits/stdc++.h>   using namespace std;   vector<int> e[3001], u;   int v[3001], d[3001];   bool dfs(int x, int from) {     if (v[x]++) {       for (v[x] = -1; u.back() != x; u.pop_back()) v[u.back()] = -1;       return true;     }     u.push_back(x);     for (size_t i = 0; i < e[x].size(); i++)       if (e[x][i] != from && dfs(e[x][i], x)) return true;     u.pop_back();     return false;   }   int main() {     int n, x, y;     scanf( %d , &n);     for (int i = 1; i <= n; i++) {       scanf( %d%d , &x, &y);       e[x].push_back(y);       e[y].push_back(x);     }     dfs(1, -1);     u.clear();     for (int i = 1; i <= n; i++)       if (v[i] < 0) u.push_back(i);     for (size_t o = 0; o < u.size(); o++) {       for (size_t i = 0; i < e[u[o]].size(); i++) {         int t = e[u[o]][i];         if (~v[t]) {           v[t] = -1;           d[t] = d[u[o]] + 1;           u.push_back(t);         }       }     }     for (int i = 1; i <= n; i++) printf( %d  , d[i]);   }   