Submission #3907591
Source Code Expand
#include <bits/stdc++.h> using namespace std; using i64 = int64_t; using vi = vector<i64>; using vvi = vector<vi>; int main() { int n, m; cin >> n >> m; vvi adj(n + m); for (int i = 0; i < n; i++) { int k; cin >> k; for (int j = 0; j < k; j++) { int a; cin >> a; a--; adj[i].push_back(n + a); adj[n + a].push_back(i); } } vi visited(n + m); function<void(int, int)> dfs = [&](int v, int p) { visited[v] = 1; for (int s : adj[v]) { if (s != p && !visited[s]) { dfs(s, v); } } }; dfs(0, -1); int ok = 1; for (int i = 0; i < n; i++) { if (!visited[i]) { ok = 0; break; } } cout << (ok ? "YES" : "NO") << endl; }
Submission Info
Submission Time | |
---|---|
Task | C - Interpretation |
User | xuzijian629 |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 902 Byte |
Status | AC |
Exec Time | 62 ms |
Memory | 10356 KB |
Judge Result
Set Name | sample | dataset1 | dataset2 | ||||||
---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 200 / 200 | 200 / 200 | ||||||
Status |
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Set Name | Test Cases |
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sample | sample-01.txt, sample-02.txt |
dataset1 | sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt |
dataset2 | sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt, 02-01.txt, 02-02.txt, 02-03.txt, 02-04.txt, 02-05.txt, 02-06.txt, 02-07.txt, 02-08.txt, 02-09.txt, 02-10.txt, 02-11.txt, 02-12.txt, 02-13.txt, sample-01.txt, sample-02.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01-01.txt | AC | 1 ms | 256 KB |
01-02.txt | AC | 2 ms | 256 KB |
01-03.txt | AC | 2 ms | 384 KB |
01-04.txt | AC | 2 ms | 384 KB |
01-05.txt | AC | 2 ms | 256 KB |
01-06.txt | AC | 2 ms | 384 KB |
01-07.txt | AC | 2 ms | 384 KB |
01-08.txt | AC | 2 ms | 384 KB |
01-09.txt | AC | 2 ms | 256 KB |
01-10.txt | AC | 2 ms | 384 KB |
02-01.txt | AC | 49 ms | 7424 KB |
02-02.txt | AC | 51 ms | 7552 KB |
02-03.txt | AC | 48 ms | 6144 KB |
02-04.txt | AC | 62 ms | 8704 KB |
02-05.txt | AC | 56 ms | 7680 KB |
02-06.txt | AC | 62 ms | 8704 KB |
02-07.txt | AC | 58 ms | 7552 KB |
02-08.txt | AC | 40 ms | 7280 KB |
02-09.txt | AC | 56 ms | 10356 KB |
02-10.txt | AC | 47 ms | 7284 KB |
02-11.txt | AC | 46 ms | 7284 KB |
02-12.txt | AC | 47 ms | 7168 KB |
02-13.txt | AC | 46 ms | 7168 KB |
sample-01.txt | AC | 1 ms | 256 KB |
sample-02.txt | AC | 1 ms | 256 KB |