Submission #465926

#	Time	Username	Problem	Language	Result	Execution time	Memory
465926		prvocislo	Senior Postmen (BOI14_postmen)	C++17	100 / 100	491 ms	64144 KiB

postmen

#include <iostream>
#include <vector>
#include <list>
#include <algorithm>
typedef long long ll;
using namespace std;

const int maxn = 5e5 + 5;
struct edge { int v, i; };
bool vise[maxn], visvr[maxn];
int nxt[maxn];
vector<edge> g[maxn];
vector<int> e;
void dfs(int u)
{
	if (visvr[u]) // cyklus
	{
		while (visvr[u])
		{
			cout << u + 1 << " ";
			visvr[u] = false;
			u = nxt[u];
		}
		cout << "\n";
	}
	while (!g[u].empty())
	{
		edge e = g[u].back();
		g[u].pop_back();
		if (!vise[e.i])
		{
			vise[e.i] = true;
			visvr[u] = true;
			nxt[u] = e.v;
			dfs(e.v);
		}
	}
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n, m;
	cin >> n >> m;
	for (int i = 0, a, b; i < m; i++)
	{
		cin >> a >> b;
		a--, b--;
		g[a].push_back({ b, i });
		g[b].push_back({ a, i });
	}
	dfs(0);
	return 0;
}

• Subtask 1: 38 / 38
• Subtask 2: 17 / 17
• Subtask 3: 45 / 45