Submission #992888
Source Code Expand
#include <bits/stdc++.h> typedef long long LL; #define SORT(c) sort((c).begin(),(c).end()) #define FOR(i,a,b) for(int i=(a);i<(b);++i) #define REP(i,n) FOR(i,0,n) using namespace std; class UnionFind { vector<int> p; public: UnionFind (int n) : p(n, -1) {} int root(int x) { return p[x] < 0 ? x : p[x] = root(p[x]); } bool same(int x, int y) { return root(x) == root(y); } bool unite(int x, int y) { x = root(x); y = root(y); if (x == y) return false; if (p[y] < p[x]) swap(x, y); if (p[x] == p[y]) --p[x]; p[y] = x; return true; } }; int main(void) { int n,m; cin >> n >> m; UnionFind uf(n); vector<int> la(m+1,-1); int answer=1; REP(i,n){ int k; cin >> k; REP(j,k){ int l; cin >> l; if(la[l]!=-1) if(uf.unite(la[l], i)) ++answer; la[l]=i; } } cout << (answer==n ? "YES" : "NO") << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Interpretation |
User | siotouto |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 960 Byte |
Status | AC |
Exec Time | 47 ms |
Memory | 1024 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 |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01-01.txt | AC | 2 ms | 256 KB |
01-02.txt | AC | 3 ms | 256 KB |
01-03.txt | AC | 3 ms | 256 KB |
01-04.txt | AC | 3 ms | 256 KB |
01-05.txt | AC | 3 ms | 256 KB |
01-06.txt | AC | 3 ms | 256 KB |
01-07.txt | AC | 3 ms | 256 KB |
01-08.txt | AC | 3 ms | 256 KB |
01-09.txt | AC | 3 ms | 256 KB |
01-10.txt | AC | 3 ms | 256 KB |
02-01.txt | AC | 32 ms | 640 KB |
02-02.txt | AC | 39 ms | 640 KB |
02-03.txt | AC | 32 ms | 512 KB |
02-04.txt | AC | 41 ms | 896 KB |
02-05.txt | AC | 40 ms | 640 KB |
02-06.txt | AC | 41 ms | 896 KB |
02-07.txt | AC | 42 ms | 640 KB |
02-08.txt | AC | 33 ms | 640 KB |
02-09.txt | AC | 47 ms | 1024 KB |
02-10.txt | AC | 38 ms | 640 KB |
02-11.txt | AC | 38 ms | 640 KB |
02-12.txt | AC | 37 ms | 640 KB |
02-13.txt | AC | 38 ms | 640 KB |
sample-01.txt | AC | 3 ms | 256 KB |
sample-02.txt | AC | 3 ms | 256 KB |