Submission #966746

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
966746	2024-04-20 09:37:50	kilkuwu	Bridges (APIO19_bridges)	C++17	0 / 100	46 ms	13580 KiB

bridges

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#include <bits/stdc++.h>
#define nl '\n'
#ifdef LOCAL
#include "template/debug.hpp"
#else
#define dbg(...) ;
#define timer(...) ;
#endif
struct DSU {
  std::vector<int> e;
  DSU(int n) : e(n, -1) {}
  int find(int u) {
    return e[u] < 0 ? u : e[u] = find(e[u]);
  }
  
  bool merge(int u, int v) {
    u = find(u), v = find(v);
    if (u == v) return false;
    if (e[u] > e[v]) std::swap(u, v);
    e[u] += e[v];
    e[v] = u;
    return true;
  } 
  bool same(int u, int v) {
 
 
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