Submission #836072

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
836072	2023-08-24 06:58:29	gustason	City Mapping (NOI18_citymapping)	C++14	9 / 100	105 ms	10296 KiB

citymapping

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#include <bits/stdc++.h>
#include "citymapping.h"
using namespace std;
const int nax = 1002;
struct Dsu {
  int par[nax];
  int sz[nax];
  
  Dsu() {
    for(int i = 0; i < nax; i++) {
      par[i] = i;
      sz[i] = 1;
    }
  }
  
  int find(int v) {
    if (v == par[v]) {
      return v;
    }
    return par[v] = find(par[v]);
  }
  
  bool unite(int a, int b) {
     a = find(a), b = find(b);
     if (a == b) return false;
     
     if (sz[b] > sz[a]) swap(a, b);
     par[b] = a;
 
 
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