8230 | 2024. 01. 12 22:19:18 | bovizdb | Elágazás nélküli úton levő települések (50 pont) | cpp17 | Elfogadva 50/50 | 14ms | 6648 KiB |
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"
#define pll pair<ll, ll>
#define fs first
#define sc second
#define vll vector<ll>
#define v2d vector<vector<ll>>
#define vpll vector<pll>
#define qll queue<ll>
#define stll stack<ll>
#define sll set<ll>
#define mll map<ll, ll>
ll n, m;
v2d g;
void solve()
{
cin >> n >> m;
g.resize(n);
for (ll i = 0; i < m; i++)
{
ll in1, in2;
cin >> in1 >> in2;
g[in1-1].push_back(in2-1);
g[in2-1].push_back(in1-1);
}
vll v;
for (ll i = 0; i < n; i++)
{
if (g[i].size() == 1)
{
v.push_back(i);
}
}
vector<bool>out(n);
for (ll i : v)
{
ll p = i, last = -1;
while(true)
{
if (g[p].size() > 2 || g[p].size() == 0) break;
if (g[p].size() == 1 && p != i) break;
if (g[p][0] == last)
{
out[g[p][1]] = 1;
last = p;
p = g[p][1];
}
else
{
out[g[p][0]] = 1;
last = p;
p = g[p][0];
}
}
}
cout << count(out.begin(), out.end(), 1) << endl;
for (ll i = 0; i < n; i++)
{
if (out[i] == 1)
{
cout << i+1 << " ";
}
}
}
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL); cout.tie(NULL);
ll t = 1;
//cin >> t;
while(t--)
{
solve();
}
return 0;
}
Részfeladat | Összpont | Teszt | Verdikt | Idő | Memória | ||
---|---|---|---|---|---|---|---|
base | 50/50 | ||||||
1 | Elfogadva | 0/0 | 3ms | 1828 KiB | |||
2 | Elfogadva | 0/0 | 14ms | 4824 KiB | |||
3 | Elfogadva | 2/2 | 3ms | 2376 KiB | |||
4 | Elfogadva | 2/2 | 3ms | 2496 KiB | |||
5 | Elfogadva | 2/2 | 3ms | 2680 KiB | |||
6 | Elfogadva | 2/2 | 3ms | 2888 KiB | |||
7 | Elfogadva | 2/2 | 3ms | 3236 KiB | |||
8 | Elfogadva | 2/2 | 4ms | 3664 KiB | |||
9 | Elfogadva | 2/2 | 4ms | 3748 KiB | |||
10 | Elfogadva | 2/2 | 6ms | 4276 KiB | |||
11 | Elfogadva | 2/2 | 8ms | 4940 KiB | |||
12 | Elfogadva | 2/2 | 8ms | 4956 KiB | |||
13 | Elfogadva | 3/3 | 3ms | 3688 KiB | |||
14 | Elfogadva | 3/3 | 4ms | 3916 KiB | |||
15 | Elfogadva | 3/3 | 4ms | 4088 KiB | |||
16 | Elfogadva | 3/3 | 4ms | 4176 KiB | |||
17 | Elfogadva | 3/3 | 8ms | 4800 KiB | |||
18 | Elfogadva | 3/3 | 8ms | 4808 KiB | |||
19 | Elfogadva | 3/3 | 9ms | 5340 KiB | |||
20 | Elfogadva | 3/3 | 14ms | 6344 KiB | |||
21 | Elfogadva | 3/3 | 14ms | 6648 KiB | |||
22 | Elfogadva | 3/3 | 14ms | 6640 KiB |