이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#define int long long
#define float double
#define pb push_back
#define F first
#define S second
#define T int t; cin >> t; while(t--)
#define IOS ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
using namespace std;
/// Benzema is the best player in the world
const int N = 1e6 + 6;
const int M = 1e3 + 3;
const int mod = 1e9 + 7;
const int inf = 1e9;
const int dx[] = {-1, 1, 0, 0};
const int dy[] = {0, 0, -1, 1};
const int LOG = 28;
int n, m, k;
bool nodes[N];
vector<int> adj[N], ans;
int cnt = 0;
bool dfs(int node, int par) {
bool ret = nodes[node];
for(auto x: adj[node]) {
if (x == par) continue;
ret |= dfs(x, node);
}
if (ret == 1) cnt++;
return ret;
}
main() {
IOS
cin >> n >> m >> k;
for(int i = 1; i < n; i++) {
int u, v;
cin >> u >> v;
adj[u].push_back(v);
adj[v].push_back(u);
}
for(int i = 1; i <= m; i++) {
int s;
cin >> s;
int x;
for(int j = 1; j <= n; j++) nodes[j] = 0;
for(int j = 1; j <= s; ++j) {
cin >> x;
nodes[x] = 1;
}
cnt = 0;
dfs(x, x);
if (cnt - 1 <= k) ans.push_back(i);
}
cout << ans.size() << '\n';
for(auto x: ans) cout << x << ' ';
}
컴파일 시 표준 에러 (stderr) 메시지
railway.cpp:34:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
34 | main() {
| ^~~~
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