Submission #790351

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
790351	2023-07-22 15:04:28	pavement	Teleporters (IOI08_teleporters)	C++17	70 / 100	1078 ms	45128 KiB

teleporters

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#include <bits/stdc++.h>
using namespace std;
#define mp make_pair
#define pb push_back
#define eb emplace_back
using ii = pair<int, int>;
int N, M, to_remove, W[1000005], E[1000005], to[2000005];
vector<int> vec;
vector<ii> frnt, back;
namespace ufds {
  int lnk[2000005], sz[2000005];
  
  void init(int n) {
    iota(lnk + 1, lnk + 1 + n, 1);
    fill(sz + 1, sz + 1 + n, 1);
  }
  int find(int x) {
    if (x == lnk[x]) return x;
    return lnk[x] = find(lnk[x]);
  }
  void unite(int a, int b) {
    a = find(a);
    b = find(b);
    if (a == b) return;
    if (sz[b] > sz[a]) swap(a, b);
    sz[a] += sz[b];
 
 
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