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Submission #821560

# Submission time Handle Problem Language Result Execution time Memory
821560 2023-08-11T11:33:56 Z alvingogo Keys (IOI21_keys) C++17
100 / 100
 375 ms 129516 KB 
#include <vector>
#include <bits/stdc++.h>
#define fs first
#define sc second
#define p_q priority_queue
using namespace std;

struct DSU{
	vector<int> bo;
	void init(int n){
		bo.resize(n);
		iota(bo.begin(),bo.end(),0);
	}
	int find(int x){
		return bo[x]==x?x:bo[x]=find(bo[x]);
	}
	void merge(int x,int y){
		bo[x]=y;
	}
}dsu;
vector<int> r,dfn,low,out,inv;
vector<vector<int> > nw;
vector<vector<pair<int,int> > > e;
vector<vector<pair<int,int> > > st;
int cnt=1;
void dfs(int a,int f){
	dfn[a]=low[a]=out[a]=cnt;
	inv[cnt]=a;
	cnt++;
	for(auto h:e[a]){
		st[h.fs].push_back({a,h.sc});
	}
	for(auto h:st[r[a]]){
		nw[dsu.find(h.fs)].push_back(h.sc);
	}
	st[r[a]].clear();
	while(nw[a].size()){
		auto h=nw[a].back();
		nw[a].pop_back();
		if(dfn[h]){
			low[a]=min(low[a],dfn[h]);
			continue;
		}
		dfs(h,a);
		low[a]=min(low[a],low[h]);
		out[a]=out[h];
		for(auto h:st[r[a]]){
			nw[dsu.find(h.fs)].push_back(h.sc);
		}
		st[r[a]].clear();
	}
	dsu.merge(a,f);
}
vector<int> find_reachable(vector<int> R, vector<int> u, vector<int> v, vector<int> c) {
	int n=R.size();
	int m=u.size();
	dsu.init(n);
	e.resize(n);
	dfn.resize(n);
	low.resize(n);
	nw.resize(n);
	out.resize(n);
	inv.resize(n+1);
	st.resize(n);
	r=R;
	for(int i=0;i<m;i++){
		e[u[i]].push_back({c[i],v[i]});
		e[v[i]].push_back({c[i],u[i]});
	}
	for(int i=0;i<n;i++){
		if(!dfn[i]){
			dfs(i,i);
		}
	}
	int mn=1e9;
	for(int i=0;i<n;i++){
		if(dfn[i]==low[i]){
			mn=min(mn,out[i]-dfn[i]+1);
		}
	}
	vector<int> ans(n);
	for(int i=0;i<n;i++){
		if(dfn[i]==low[i]){
			if(out[i]-dfn[i]+1==mn){
				for(int j=dfn[i];j<=out[i];j++){
					ans[inv[j]]=1;
				}
			}
		}
	}
	return ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 296 KB Output is correct
7 Correct 0 ms 300 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 296 KB Output is correct
7 Correct 0 ms 300 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 296 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 300 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 296 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 296 KB Output is correct
7 Correct 0 ms 300 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 296 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 300 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 296 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 2 ms 724 KB Output is correct
28 Correct 2 ms 852 KB Output is correct
29 Correct 2 ms 852 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 724 KB Output is correct
35 Correct 1 ms 596 KB Output is correct
36 Correct 2 ms 948 KB Output is correct
37 Correct 2 ms 980 KB Output is correct
38 Correct 2 ms 1108 KB Output is correct
39 Correct 2 ms 1108 KB Output is correct
40 Correct 1 ms 432 KB Output is correct
41 Correct 1 ms 568 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 296 KB Output is correct
7 Correct 0 ms 300 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 159 ms 43340 KB Output is correct
11 Correct 253 ms 68052 KB Output is correct
12 Correct 38 ms 11340 KB Output is correct
13 Correct 211 ms 57616 KB Output is correct
14 Correct 172 ms 129000 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 296 KB Output is correct
7 Correct 0 ms 300 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 296 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 300 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 296 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 2 ms 724 KB Output is correct
28 Correct 2 ms 852 KB Output is correct
29 Correct 2 ms 852 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 724 KB Output is correct
35 Correct 1 ms 596 KB Output is correct
36 Correct 2 ms 948 KB Output is correct
37 Correct 2 ms 980 KB Output is correct
38 Correct 2 ms 1108 KB Output is correct
39 Correct 2 ms 1108 KB Output is correct
40 Correct 1 ms 432 KB Output is correct
41 Correct 1 ms 568 KB Output is correct
42 Correct 159 ms 43340 KB Output is correct
43 Correct 253 ms 68052 KB Output is correct
44 Correct 38 ms 11340 KB Output is correct
45 Correct 211 ms 57616 KB Output is correct
46 Correct 172 ms 129000 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 1 ms 296 KB Output is correct
50 Correct 147 ms 98084 KB Output is correct
51 Correct 171 ms 99776 KB Output is correct
52 Correct 204 ms 53592 KB Output is correct
53 Correct 250 ms 53860 KB Output is correct
54 Correct 237 ms 66776 KB Output is correct
55 Correct 199 ms 52744 KB Output is correct
56 Correct 330 ms 79600 KB Output is correct
57 Correct 202 ms 73432 KB Output is correct
58 Correct 294 ms 78540 KB Output is correct
59 Correct 375 ms 81428 KB Output is correct
60 Correct 366 ms 101724 KB Output is correct
61 Correct 333 ms 103388 KB Output is correct
62 Correct 204 ms 46672 KB Output is correct
63 Correct 132 ms 51800 KB Output is correct
64 Correct 3 ms 2388 KB Output is correct
65 Correct 3 ms 2388 KB Output is correct
66 Correct 234 ms 46864 KB Output is correct
67 Correct 18 ms 13160 KB Output is correct
68 Correct 29 ms 21704 KB Output is correct
69 Correct 346 ms 82084 KB Output is correct
70 Correct 56 ms 43196 KB Output is correct
71 Correct 177 ms 129516 KB Output is correct
72 Correct 347 ms 82068 KB Output is correct
73 Correct 237 ms 46912 KB Output is correct