Submission #1026040

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1026040	2024-07-17 13:19:10	0npata	Roller Coaster Railroad (IOI16_railroad)	C++17	100 / 100	752 ms	76372 KiB

railroad

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#include "railroad.h"
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define vec vector
const int INF = 1e9+1;
struct DSU {
  vec<int> par;
  vec<int> sz;
  DSU(int n) {
    par = vec<int>(n);
    sz = vec<int>(n, 1);
    iota(par.begin(), par.end(), 0);
  }
  int root(int u) {
    if(par[u] == u) return u;
    par[u] = root(par[u]);
    return par[u];
  }
  bool join(int u, int v) {
    u = root(u);
    v = root(v);
    if(u == v) return false;
 
 
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• Subtask 1: 11 / 11
• Subtask 2: 23 / 23
• Subtask 3: 30 / 30
• Subtask 4: 36 / 36