Submission #831191

#	Time	Username	Problem	Language	Result	Execution time	Memory
831191		caganyanmaz	Thousands Islands (IOI22_islands)	C++17	3.50 / 100	27 ms	8044 KiB

islands

#include <bits/stdc++.h>
#define pb push_back
#include "islands.h"
using namespace std;


#ifdef DEBUGGING
#include "../debug.h"
#else
#define debug(x...) void(42)
#endif

constexpr static int MXN = 1e5 + 5;
int n, m;
vector<int> u, v;
vector<array<int, 2>> g[MXN];
int state[MXN];
vector<int> path;

bool dfs(int node)
{
	state[node] = 1;
	for (auto [c, e] : g[node])
	{
		path.pb(e);
		if (state[c] == 1)
			return true;
		if (state[c] == 0 && dfs(c))
			return true;
		path.pop_back();
	}
	state[node] = 2;
	return false;
}

variant<bool, vector<int>> find_journey(int N, int M, vector<int> U, vector<int> V)
{
	n = N, m = M;
	u = U, v = V;
	int lcount = 0, rcount = 0;
	for (int j = 0; j < m; j++)
		if (u[j] == 0)
			lcount++;
		else
			rcount++;
	return lcount > 1 && rcount > 0;
}

• Subtask 1: 1.75 / 5
• Subtask 2: 1.75 / 5
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 45