Submission #627308

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
627308	2022-08-12 12:38:51	happypotato	Thousands Islands (IOI22_islands)	C++17	10 / 100	130 ms	17100 KiB

islands

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#include "islands.h"
#include <variant>
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define ff first
#define ss second
#define pb push_back
#define rettype variant<bool, vector<int>>
// global
int n, m;
const int mxN = 1e5 + 1;
vector<int> adj[mxN];
int par[mxN];
bool vis[mxN];
int vispos[mxN];
map<pii, int> mp;
vector<int> path;
bool done = false;
int loopstart = -1;
void dfs(int u = 0, int pp = -1) {
  if (done) return;
  vis[u] = true;
  par[u] = pp;
  vispos[u] = path.size();
  path.pb(u);
  for (int v : adj[u]) {
    if (!vis[v]) {
      dfs(v, u);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 45