Submission #536143

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
536143	2022-03-12 13:23:02	lunchbox	Swapping Cities (APIO20_swap)	C++17	100 / 100	185 ms	15040 KiB

swap

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#include <bits/stdc++.h>
#include "swap.h"
using namespace std;
 
const int INF = 0x3f3f3f3f;
 
vector<int> ds, ww1, ww2;
 
int find(int i) {
  return ds[i] < 0 ? i : find(ds[i]);
}
 
void join(int i, int j, int w, int bridge) {
  i = find(i);
  j = find(j);
  if (i == j)
    ww2[i] = min(ww2[i], w);
  else {
    if (ds[i] > ds[j])
      swap(i, j);
    ds[i] += ds[j], ds[j] = i;
    ww1[j] = w;
    ww2[i] = min(ww2[i], max(w, bridge ? 0 : ww2[j]));
  }
}
 
void init(int n, int m, std::vector<int> ii, std::vector<int> jj, std::vector<int> ww) {
  vector<int> hh(m), dd(n);
  for (int i = 0; i < m; i++)
    hh[i] = i;
 
 
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• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 17 / 17
• Subtask 4: 20 / 20
• Subtask 5: 23 / 23
• Subtask 6: 27 / 27