Submission #5879730
Source Code Expand
#include <bits/stdc++.h> #include <assert.h> using namespace std; using i64 = long long; struct UnionFind { vector<i64> data; UnionFind(i64 size) { data.resize(size, -1); } i64 unite(i64 x, i64 y) { x = root(x); y = root(y); if (x != y) { if (data[y] < data[x]) swap(x, y); data[x] += data[y]; data[y] = x; } return 0; } bool same(i64 x, i64 y) { return root(x) == root(y); } i64 root(i64 x) { return data[x] < 0 ? x : data[x] = root(data[x]); } i64 size(i64 x) { return -data[root(x)]; } }; int main() { i64 n, m; cin >> n >> m; UnionFind uf(n + m); for (i64 i = 0; i < n; i++) { i64 k; cin >> k; for (i64 j = 0; j < k; j++) { i64 l; cin >> l; uf.unite(i, n + l - 1); } } cout << (uf.size(0) + 1 == n + m ? "YES" : "NO") << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Interpretation |
User | ecto0310 |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 955 Byte |
Status | WA |
Exec Time | 45 ms |
Memory | 1792 KB |
Judge Result
Set Name | sample | dataset1 | dataset2 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 200 | 0 / 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 | WA | 1 ms | 256 KB |
01-02.txt | WA | 1 ms | 256 KB |
01-03.txt | AC | 2 ms | 256 KB |
01-04.txt | WA | 1 ms | 256 KB |
01-05.txt | AC | 2 ms | 256 KB |
01-06.txt | WA | 1 ms | 256 KB |
01-07.txt | WA | 1 ms | 256 KB |
01-08.txt | AC | 1 ms | 256 KB |
01-09.txt | WA | 1 ms | 256 KB |
01-10.txt | WA | 2 ms | 256 KB |
02-01.txt | WA | 31 ms | 1024 KB |
02-02.txt | AC | 38 ms | 1024 KB |
02-03.txt | AC | 31 ms | 768 KB |
02-04.txt | WA | 40 ms | 1408 KB |
02-05.txt | WA | 39 ms | 896 KB |
02-06.txt | AC | 40 ms | 1408 KB |
02-07.txt | AC | 40 ms | 1024 KB |
02-08.txt | AC | 32 ms | 1024 KB |
02-09.txt | WA | 45 ms | 1792 KB |
02-10.txt | WA | 37 ms | 1024 KB |
02-11.txt | AC | 37 ms | 1024 KB |
02-12.txt | WA | 35 ms | 1024 KB |
02-13.txt | AC | 35 ms | 1024 KB |
sample-01.txt | AC | 1 ms | 256 KB |
sample-02.txt | AC | 1 ms | 256 KB |