9677 | 2024. 02. 23 22:14:21 | Pbg4444 | Parti (75 pont) | cpp17 | Hibás válasz 72/75 | 89ms | 16336 KiB |
#include <bits/stdc++.h>
using namespace std;
int main() {
int n;
cin >> n;
vector<int> adj[n];
vector<int> s(n, 0);
int a, b;
for (int i = 0; i < n; i++) {
cin >> a >> b;
adj[i].push_back(a-1);
adj[i].push_back(b-1);
s[a-1]++;
s[b-1]++;
}
queue<int> q;
vector<bool> v(n, 0);
for (int i = 0; i < n; i++) {
if (s[i] >= 2) continue;
q.push(i);
}
while (!q.empty()) {
int z = q.front();
q.pop();
if (v[z]) continue;
v[z] = 1;
for (int y : adj[z]) {
s[y]--;
if (s[y] < 2) q.push(y);
}
}
int out = 0;
string ans = "";
for(int i = 0; i < n; i++){
if(!v[i]){
out++;
ans += to_string(i+1) + " ";
}
}
if (ans != "") ans.erase(ans.size()-1);
cout<<out;
if(ans != "")cout<<"\n"<<ans;
}
Részfeladat | Összpont | Teszt | Verdikt | Idő | Memória | ||
---|---|---|---|---|---|---|---|
base | 72/75 | ||||||
1 | Elfogadva | 0/0 | 3ms | 1812 KiB | |||
2 | Elfogadva | 0/0 | 45ms | 8748 KiB | |||
3 | Elfogadva | 3/3 | 3ms | 2380 KiB | |||
4 | Elfogadva | 3/3 | 3ms | 2500 KiB | |||
5 | Hibás válasz | 0/3 | 3ms | 2672 KiB | |||
6 | Elfogadva | 3/3 | 3ms | 2820 KiB | |||
7 | Elfogadva | 3/3 | 3ms | 2892 KiB | |||
8 | Elfogadva | 4/4 | 3ms | 3280 KiB | |||
9 | Elfogadva | 4/4 | 3ms | 3404 KiB | |||
10 | Elfogadva | 4/4 | 4ms | 3444 KiB | |||
11 | Elfogadva | 4/4 | 3ms | 3376 KiB | |||
12 | Elfogadva | 4/4 | 4ms | 3708 KiB | |||
13 | Elfogadva | 4/4 | 4ms | 3920 KiB | |||
14 | Elfogadva | 4/4 | 6ms | 4152 KiB | |||
15 | Elfogadva | 4/4 | 45ms | 9852 KiB | |||
16 | Elfogadva | 4/4 | 52ms | 11412 KiB | |||
17 | Elfogadva | 4/4 | 61ms | 12604 KiB | |||
18 | Elfogadva | 4/4 | 70ms | 13864 KiB | |||
19 | Elfogadva | 4/4 | 79ms | 15084 KiB | |||
20 | Elfogadva | 4/4 | 87ms | 16332 KiB | |||
21 | Elfogadva | 4/4 | 89ms | 16336 KiB | |||
22 | Elfogadva | 4/4 | 3ms | 3600 KiB |