Submission #1496004
Source Code Expand
#include<bits/stdc++.h> using namespace std; int tree[100010]; int root(int x){return tree[x] == x ? x : tree[x] = root(tree[x]);} void unite(int a , int b){tree[root(a)] = root(b);} int main(){ int n , m; cin >> n >> m; for(int i = 0; i < n; i++) tree[i] = i; int k; vector <vector <int> > l(m); for(int i = 0; i < n; i++){ cin >> k; int va; for(int j = 0; j < k; j++){ cin >> va; va--; l[va].push_back(i); } } for(int i = 0; i < m; i++){ while(l[i].size() >= 2){ unite(l[i][0] , l[i][l[i].size() - 1]); l[i].pop_back(); } } for(int i = 0; i < n - 1; i++) if(root(i) != root(i + 1)){ cout << "NO" << endl; return 0; } cout << "YES" << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Interpretation |
User | Masumi |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 735 Byte |
Status | AC |
Exec Time | 49 ms |
Memory | 4608 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 | 1 ms | 256 KB |
01-03.txt | AC | 1 ms | 256 KB |
01-04.txt | AC | 1 ms | 256 KB |
01-05.txt | AC | 1 ms | 256 KB |
01-06.txt | AC | 1 ms | 256 KB |
01-07.txt | AC | 1 ms | 256 KB |
01-08.txt | AC | 1 ms | 256 KB |
01-09.txt | AC | 2 ms | 256 KB |
01-10.txt | AC | 1 ms | 256 KB |
02-01.txt | AC | 40 ms | 4608 KB |
02-02.txt | AC | 40 ms | 1280 KB |
02-03.txt | AC | 40 ms | 2816 KB |
02-04.txt | AC | 49 ms | 4224 KB |
02-05.txt | AC | 46 ms | 1536 KB |
02-06.txt | AC | 49 ms | 4224 KB |
02-07.txt | AC | 47 ms | 1664 KB |
02-08.txt | AC | 33 ms | 1152 KB |
02-09.txt | AC | 48 ms | 3580 KB |
02-10.txt | AC | 40 ms | 3456 KB |
02-11.txt | AC | 40 ms | 3456 KB |
02-12.txt | AC | 40 ms | 3456 KB |
02-13.txt | AC | 40 ms | 3328 KB |
sample-01.txt | AC | 1 ms | 256 KB |
sample-02.txt | AC | 1 ms | 256 KB |