oj.uz

Submission #404074

# Submission time Handle Problem Language Result Execution time Memory
404074 2021-05-13T18:18:04 Z errorgorn None (KOI18_family) C++17
100 / 100
 531 ms 93432 KB 
//雪花飄飄北風嘯嘯
//天地一片蒼茫

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << " is " << x << endl

#define pub push_back
#define pob pop_back
#define puf push_front
#define pof pop_front
#define lb lower_bound
#define ub upper_bound

#define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()

#define indexed_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
//change less to less_equal for non distinct pbds, but erase will bug

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

int n1,n2,k;
vector<int> al[600010];
int root1,root2;

vector<int> cc[600010];
int ss[600010];

vector<int> proc;

int dfs(int i){
	if (i<=k || (300005<i && i<=k+300005)){
		ss[i]=1;
		return i%300005;
	}
	else{
		for (auto &it:al[i]){
			cc[i].pub(dfs(it));
			ss[i]+=ss[it];
		}
		
		proc.pub(i);
		return cc[i][0];
	}
}

struct DSU{
	int p[300005];
	int s[300005];
	
	DSU(){
		rep(x,0,300005) p[x]=x,s[x]=1;
	}
	
	int par(int i){
		if (p[i]==i) return i;
		else return p[i]=par(p[i]);
	}
	
	void unions(int i,int j){
		i=par(i),j=par(j);
		if (i==j) return;
		
		if (s[i]>s[j]) swap(i,j);
		p[i]=j;
		s[j]+=s[i];
	}
} dsu=DSU();

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin.exceptions(ios::badbit | ios::failbit);
	
	cin>>n1>>n2>>k;
	
	int t;
	rep(x,1,n1+1){
		cin>>t;
		if (t==0) root1=x;
		else al[t].pub(x);
	}
	
	rep(x,1,n2+1){
		cin>>t;
		if (t==0) root2=x+300005;
		else al[t+300005].pub(x+300005);
	}
	
	dfs(root1);
	dfs(root2);
	
	//rep(x,1,n1+1) cout<<ss[x]<<" "; cout<<endl;
	
	sort(all(proc),[](int i,int j){
		return ss[i]<ss[j];
	});
	
	for (auto &it:proc){
		if (sz(cc[it])==1) continue;
		//cout<<it<<endl;
		//for (auto &it2:cc[it]) cout<<it2<<" "; cout<<endl;
		
		rep(x,0,sz(cc[it])-1){
			dsu.unions(cc[it][x],cc[it][x+1]);
		}
		
		if (dsu.s[dsu.par(cc[it][0])]!=ss[it]){
			cout<<"NO"<<endl;
			return 0;
		}
	}
	
	cout<<"YES"<<endl;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 30796 KB Output is correct
2 Correct 22 ms 30788 KB Output is correct
3 Correct 20 ms 30840 KB Output is correct
4 Correct 19 ms 30836 KB Output is correct
5 Correct 20 ms 30748 KB Output is correct
6 Correct 21 ms 30796 KB Output is correct
7 Correct 20 ms 30760 KB Output is correct
8 Correct 20 ms 30796 KB Output is correct
9 Correct 21 ms 30796 KB Output is correct
10 Correct 20 ms 30856 KB Output is correct
11 Correct 20 ms 30856 KB Output is correct
12 Correct 21 ms 30808 KB Output is correct
13 Correct 20 ms 30796 KB Output is correct
14 Correct 23 ms 30796 KB Output is correct
15 Correct 20 ms 30888 KB Output is correct
16 Correct 21 ms 30852 KB Output is correct
17 Correct 20 ms 30796 KB Output is correct
18 Correct 20 ms 30776 KB Output is correct
19 Correct 20 ms 30884 KB Output is correct
20 Correct 20 ms 30856 KB Output is correct
21 Correct 22 ms 30856 KB Output is correct
22 Correct 20 ms 30844 KB Output is correct
23 Correct 20 ms 30860 KB Output is correct
24 Correct 21 ms 30860 KB Output is correct
25 Correct 20 ms 30796 KB Output is correct
26 Correct 19 ms 30796 KB Output is correct
27 Correct 20 ms 30844 KB Output is correct
28 Correct 20 ms 30860 KB Output is correct
29 Correct 20 ms 30796 KB Output is correct
30 Correct 20 ms 30768 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 30796 KB Output is correct
2 Correct 22 ms 30788 KB Output is correct
3 Correct 20 ms 30840 KB Output is correct
4 Correct 19 ms 30836 KB Output is correct
5 Correct 20 ms 30748 KB Output is correct
6 Correct 21 ms 30796 KB Output is correct
7 Correct 20 ms 30760 KB Output is correct
8 Correct 20 ms 30796 KB Output is correct
9 Correct 21 ms 30796 KB Output is correct
10 Correct 20 ms 30856 KB Output is correct
11 Correct 20 ms 30856 KB Output is correct
12 Correct 21 ms 30808 KB Output is correct
13 Correct 20 ms 30796 KB Output is correct
14 Correct 23 ms 30796 KB Output is correct
15 Correct 20 ms 30888 KB Output is correct
16 Correct 21 ms 30852 KB Output is correct
17 Correct 20 ms 30796 KB Output is correct
18 Correct 20 ms 30776 KB Output is correct
19 Correct 20 ms 30884 KB Output is correct
20 Correct 20 ms 30856 KB Output is correct
21 Correct 22 ms 30856 KB Output is correct
22 Correct 20 ms 30844 KB Output is correct
23 Correct 20 ms 30860 KB Output is correct
24 Correct 21 ms 30860 KB Output is correct
25 Correct 20 ms 30796 KB Output is correct
26 Correct 19 ms 30796 KB Output is correct
27 Correct 20 ms 30844 KB Output is correct
28 Correct 20 ms 30860 KB Output is correct
29 Correct 20 ms 30796 KB Output is correct
30 Correct 20 ms 30768 KB Output is correct
31 Correct 20 ms 30756 KB Output is correct
32 Correct 20 ms 30832 KB Output is correct
33 Correct 20 ms 30812 KB Output is correct
34 Correct 21 ms 30796 KB Output is correct
35 Correct 20 ms 30796 KB Output is correct
36 Correct 20 ms 30856 KB Output is correct
37 Correct 20 ms 30856 KB Output is correct
38 Correct 20 ms 30796 KB Output is correct
39 Correct 20 ms 30796 KB Output is correct
40 Correct 23 ms 30844 KB Output is correct
41 Correct 19 ms 30764 KB Output is correct
42 Correct 20 ms 30796 KB Output is correct
43 Correct 20 ms 30756 KB Output is correct
44 Correct 20 ms 30856 KB Output is correct
45 Correct 20 ms 30788 KB Output is correct
46 Correct 19 ms 30796 KB Output is correct
47 Correct 20 ms 30780 KB Output is correct
48 Correct 20 ms 30824 KB Output is correct
49 Correct 24 ms 30808 KB Output is correct
50 Correct 20 ms 30856 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 30796 KB Output is correct
2 Correct 22 ms 30788 KB Output is correct
3 Correct 20 ms 30840 KB Output is correct
4 Correct 19 ms 30836 KB Output is correct
5 Correct 20 ms 30748 KB Output is correct
6 Correct 21 ms 30796 KB Output is correct
7 Correct 20 ms 30760 KB Output is correct
8 Correct 20 ms 30796 KB Output is correct
9 Correct 21 ms 30796 KB Output is correct
10 Correct 20 ms 30856 KB Output is correct
11 Correct 20 ms 30856 KB Output is correct
12 Correct 21 ms 30808 KB Output is correct
13 Correct 20 ms 30796 KB Output is correct
14 Correct 23 ms 30796 KB Output is correct
15 Correct 20 ms 30888 KB Output is correct
16 Correct 21 ms 30852 KB Output is correct
17 Correct 20 ms 30796 KB Output is correct
18 Correct 20 ms 30776 KB Output is correct
19 Correct 20 ms 30884 KB Output is correct
20 Correct 20 ms 30856 KB Output is correct
21 Correct 22 ms 30856 KB Output is correct
22 Correct 20 ms 30844 KB Output is correct
23 Correct 20 ms 30860 KB Output is correct
24 Correct 21 ms 30860 KB Output is correct
25 Correct 20 ms 30796 KB Output is correct
26 Correct 19 ms 30796 KB Output is correct
27 Correct 20 ms 30844 KB Output is correct
28 Correct 20 ms 30860 KB Output is correct
29 Correct 20 ms 30796 KB Output is correct
30 Correct 20 ms 30768 KB Output is correct
31 Correct 20 ms 30756 KB Output is correct
32 Correct 20 ms 30832 KB Output is correct
33 Correct 20 ms 30812 KB Output is correct
34 Correct 21 ms 30796 KB Output is correct
35 Correct 20 ms 30796 KB Output is correct
36 Correct 20 ms 30856 KB Output is correct
37 Correct 20 ms 30856 KB Output is correct
38 Correct 20 ms 30796 KB Output is correct
39 Correct 20 ms 30796 KB Output is correct
40 Correct 23 ms 30844 KB Output is correct
41 Correct 19 ms 30764 KB Output is correct
42 Correct 20 ms 30796 KB Output is correct
43 Correct 20 ms 30756 KB Output is correct
44 Correct 20 ms 30856 KB Output is correct
45 Correct 20 ms 30788 KB Output is correct
46 Correct 19 ms 30796 KB Output is correct
47 Correct 20 ms 30780 KB Output is correct
48 Correct 20 ms 30824 KB Output is correct
49 Correct 24 ms 30808 KB Output is correct
50 Correct 20 ms 30856 KB Output is correct
51 Correct 22 ms 30964 KB Output is correct
52 Correct 23 ms 31120 KB Output is correct
53 Correct 23 ms 31180 KB Output is correct
54 Correct 22 ms 31088 KB Output is correct
55 Correct 22 ms 30984 KB Output is correct
56 Correct 26 ms 31020 KB Output is correct
57 Correct 22 ms 31052 KB Output is correct
58 Correct 24 ms 31064 KB Output is correct
59 Correct 22 ms 31052 KB Output is correct
60 Correct 21 ms 31044 KB Output is correct
61 Correct 23 ms 31504 KB Output is correct
62 Correct 24 ms 31436 KB Output is correct
63 Correct 21 ms 30992 KB Output is correct
64 Correct 22 ms 31068 KB Output is correct
65 Correct 20 ms 30832 KB Output is correct
66 Correct 24 ms 31052 KB Output is correct
67 Correct 26 ms 31072 KB Output is correct
68 Correct 23 ms 31180 KB Output is correct
69 Correct 24 ms 31148 KB Output is correct
70 Correct 22 ms 30992 KB Output is correct

Subtask #4
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 30796 KB Output is correct
2 Correct 22 ms 30788 KB Output is correct
3 Correct 20 ms 30840 KB Output is correct
4 Correct 19 ms 30836 KB Output is correct
5 Correct 20 ms 30748 KB Output is correct
6 Correct 21 ms 30796 KB Output is correct
7 Correct 20 ms 30760 KB Output is correct
8 Correct 20 ms 30796 KB Output is correct
9 Correct 21 ms 30796 KB Output is correct
10 Correct 20 ms 30856 KB Output is correct
11 Correct 20 ms 30856 KB Output is correct
12 Correct 21 ms 30808 KB Output is correct
13 Correct 20 ms 30796 KB Output is correct
14 Correct 23 ms 30796 KB Output is correct
15 Correct 20 ms 30888 KB Output is correct
16 Correct 21 ms 30852 KB Output is correct
17 Correct 20 ms 30796 KB Output is correct
18 Correct 20 ms 30776 KB Output is correct
19 Correct 20 ms 30884 KB Output is correct
20 Correct 20 ms 30856 KB Output is correct
21 Correct 22 ms 30856 KB Output is correct
22 Correct 20 ms 30844 KB Output is correct
23 Correct 20 ms 30860 KB Output is correct
24 Correct 21 ms 30860 KB Output is correct
25 Correct 20 ms 30796 KB Output is correct
26 Correct 19 ms 30796 KB Output is correct
27 Correct 20 ms 30844 KB Output is correct
28 Correct 20 ms 30860 KB Output is correct
29 Correct 20 ms 30796 KB Output is correct
30 Correct 20 ms 30768 KB Output is correct
31 Correct 20 ms 30756 KB Output is correct
32 Correct 20 ms 30832 KB Output is correct
33 Correct 20 ms 30812 KB Output is correct
34 Correct 21 ms 30796 KB Output is correct
35 Correct 20 ms 30796 KB Output is correct
36 Correct 20 ms 30856 KB Output is correct
37 Correct 20 ms 30856 KB Output is correct
38 Correct 20 ms 30796 KB Output is correct
39 Correct 20 ms 30796 KB Output is correct
40 Correct 23 ms 30844 KB Output is correct
41 Correct 19 ms 30764 KB Output is correct
42 Correct 20 ms 30796 KB Output is correct
43 Correct 20 ms 30756 KB Output is correct
44 Correct 20 ms 30856 KB Output is correct
45 Correct 20 ms 30788 KB Output is correct
46 Correct 19 ms 30796 KB Output is correct
47 Correct 20 ms 30780 KB Output is correct
48 Correct 20 ms 30824 KB Output is correct
49 Correct 24 ms 30808 KB Output is correct
50 Correct 20 ms 30856 KB Output is correct
51 Correct 22 ms 30964 KB Output is correct
52 Correct 23 ms 31120 KB Output is correct
53 Correct 23 ms 31180 KB Output is correct
54 Correct 22 ms 31088 KB Output is correct
55 Correct 22 ms 30984 KB Output is correct
56 Correct 26 ms 31020 KB Output is correct
57 Correct 22 ms 31052 KB Output is correct
58 Correct 24 ms 31064 KB Output is correct
59 Correct 22 ms 31052 KB Output is correct
60 Correct 21 ms 31044 KB Output is correct
61 Correct 23 ms 31504 KB Output is correct
62 Correct 24 ms 31436 KB Output is correct
63 Correct 21 ms 30992 KB Output is correct
64 Correct 22 ms 31068 KB Output is correct
65 Correct 20 ms 30832 KB Output is correct
66 Correct 24 ms 31052 KB Output is correct
67 Correct 26 ms 31072 KB Output is correct
68 Correct 23 ms 31180 KB Output is correct
69 Correct 24 ms 31148 KB Output is correct
70 Correct 22 ms 30992 KB Output is correct
71 Correct 63 ms 36548 KB Output is correct
72 Correct 59 ms 34588 KB Output is correct
73 Correct 44 ms 34996 KB Output is correct
74 Correct 80 ms 40520 KB Output is correct
75 Correct 68 ms 39552 KB Output is correct
76 Correct 529 ms 93432 KB Output is correct
77 Correct 531 ms 78172 KB Output is correct
78 Correct 243 ms 48184 KB Output is correct
79 Correct 438 ms 79820 KB Output is correct
80 Correct 454 ms 75632 KB Output is correct
81 Correct 64 ms 36544 KB Output is correct
82 Correct 53 ms 34492 KB Output is correct
83 Correct 45 ms 35080 KB Output is correct
84 Correct 69 ms 40252 KB Output is correct
85 Correct 67 ms 39460 KB Output is correct
86 Correct 427 ms 72240 KB Output is correct
87 Correct 387 ms 72116 KB Output is correct
88 Correct 245 ms 48204 KB Output is correct
89 Correct 426 ms 78764 KB Output is correct
90 Correct 460 ms 75860 KB Output is correct