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Submission #578086

# Submission time Handle Problem Language Result Execution time Memory
578086 2022-06-16T03:54:54 Z qwerasdfzxcl Keys (IOI21_keys) C++17
100 / 100
 1419 ms 94632 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
vector<pair<int, int>> adj[300300], st[300300];
vector<int> nxt[300300];
int col[300300], dfn[300300], INV[300300], mn[300300], out[300300], cnt = 1;
bool visited[300300];

void dfs(int s, int pa = -1){
    dfn[s] = cnt++;
    INV[dfn[s]] = s;
    visited[s] = 1;

    mn[s] = dfn[s];
    out[s] = dfn[s];

    //stack push
    for (auto &[c, v]:adj[s]) st[c].emplace_back(s, v);

    //stack pop
    for (auto &[u, v]:st[col[s]]) nxt[u].push_back(v);
    st[col[s]].clear();

    //traverse
    while(!nxt[s].empty()){
        int v = nxt[s].back(); nxt[s].pop_back();
        if (visited[v]) {mn[s] = min(mn[s], mn[v]); continue;}

        dfs(v, s);
        mn[s] = min(mn[s], mn[v]);
        out[s] = out[v];

        //stack pop
        for (auto &[u, v]:st[col[s]]) nxt[u].push_back(v);
        st[col[s]].clear();
    }

    for (auto &[c, v]:adj[s]){
        for (int i=(int)st[c].size()-1;i>=0;i--){
            if (st[c][i].first!=s) break;
            st[c][i].first = pa;
        }
    }
}

std::vector<int> find_reachable(std::vector<int> r, std::vector<int> u, std::vector<int> v, std::vector<int> c) {
	std::vector<int> ans(r.size());
	int n = r.size();

	//build graph
    for (int i=1;i<=n;i++){
        col[i] = r[i-1];
    }
    for (int i=0;i<(int)u.size();i++){
        adj[u[i]+1].emplace_back(c[i], v[i]+1);
        adj[v[i]+1].emplace_back(c[i], u[i]+1);
    }

    for (int i=1;i<=n;i++) if (!visited[i]) dfs(i);

    int rans = 1e9;
    for (int i=1;i<=n;i++) if (mn[i]==dfn[i]) rans = min(rans, out[i] - dfn[i] + 1);
    for (int i=1;i<=n;i++) if (mn[i]==dfn[i] && out[i]-dfn[i]+1==rans){
        for (int j=dfn[i];j<=out[i];j++) ans[INV[j]-1] = 1;
    }

	return ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 21460 KB Output is correct
2 Correct 10 ms 21460 KB Output is correct
3 Correct 11 ms 21488 KB Output is correct
4 Correct 11 ms 21460 KB Output is correct
5 Correct 11 ms 21428 KB Output is correct
6 Correct 10 ms 21460 KB Output is correct
7 Correct 10 ms 21432 KB Output is correct
8 Correct 11 ms 21460 KB Output is correct
9 Correct 11 ms 21492 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 21460 KB Output is correct
2 Correct 10 ms 21460 KB Output is correct
3 Correct 11 ms 21488 KB Output is correct
4 Correct 11 ms 21460 KB Output is correct
5 Correct 11 ms 21428 KB Output is correct
6 Correct 10 ms 21460 KB Output is correct
7 Correct 10 ms 21432 KB Output is correct
8 Correct 11 ms 21460 KB Output is correct
9 Correct 11 ms 21492 KB Output is correct
10 Correct 10 ms 21524 KB Output is correct
11 Correct 12 ms 21516 KB Output is correct
12 Correct 10 ms 21460 KB Output is correct
13 Correct 11 ms 21460 KB Output is correct
14 Correct 12 ms 21488 KB Output is correct
15 Correct 11 ms 21460 KB Output is correct
16 Correct 11 ms 21456 KB Output is correct
17 Correct 12 ms 21444 KB Output is correct
18 Correct 10 ms 21460 KB Output is correct
19 Correct 10 ms 21460 KB Output is correct
20 Correct 10 ms 21392 KB Output is correct
21 Correct 11 ms 21544 KB Output is correct
22 Correct 11 ms 21516 KB Output is correct
23 Correct 11 ms 21460 KB Output is correct
24 Correct 10 ms 21460 KB Output is correct
25 Correct 11 ms 21460 KB Output is correct
26 Correct 11 ms 21532 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 21460 KB Output is correct
2 Correct 10 ms 21460 KB Output is correct
3 Correct 11 ms 21488 KB Output is correct
4 Correct 11 ms 21460 KB Output is correct
5 Correct 11 ms 21428 KB Output is correct
6 Correct 10 ms 21460 KB Output is correct
7 Correct 10 ms 21432 KB Output is correct
8 Correct 11 ms 21460 KB Output is correct
9 Correct 11 ms 21492 KB Output is correct
10 Correct 10 ms 21524 KB Output is correct
11 Correct 12 ms 21516 KB Output is correct
12 Correct 10 ms 21460 KB Output is correct
13 Correct 11 ms 21460 KB Output is correct
14 Correct 12 ms 21488 KB Output is correct
15 Correct 11 ms 21460 KB Output is correct
16 Correct 11 ms 21456 KB Output is correct
17 Correct 12 ms 21444 KB Output is correct
18 Correct 10 ms 21460 KB Output is correct
19 Correct 10 ms 21460 KB Output is correct
20 Correct 10 ms 21392 KB Output is correct
21 Correct 11 ms 21544 KB Output is correct
22 Correct 11 ms 21516 KB Output is correct
23 Correct 11 ms 21460 KB Output is correct
24 Correct 10 ms 21460 KB Output is correct
25 Correct 11 ms 21460 KB Output is correct
26 Correct 11 ms 21532 KB Output is correct
27 Correct 15 ms 21672 KB Output is correct
28 Correct 12 ms 21828 KB Output is correct
29 Correct 12 ms 21844 KB Output is correct
30 Correct 12 ms 21652 KB Output is correct
31 Correct 12 ms 21588 KB Output is correct
32 Correct 13 ms 21460 KB Output is correct
33 Correct 11 ms 21588 KB Output is correct
34 Correct 13 ms 21704 KB Output is correct
35 Correct 12 ms 21592 KB Output is correct
36 Correct 12 ms 21844 KB Output is correct
37 Correct 12 ms 21884 KB Output is correct
38 Correct 13 ms 21952 KB Output is correct
39 Correct 15 ms 21972 KB Output is correct
40 Correct 14 ms 21704 KB Output is correct
41 Correct 11 ms 21588 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 21460 KB Output is correct
2 Correct 10 ms 21460 KB Output is correct
3 Correct 11 ms 21488 KB Output is correct
4 Correct 11 ms 21460 KB Output is correct
5 Correct 11 ms 21428 KB Output is correct
6 Correct 10 ms 21460 KB Output is correct
7 Correct 10 ms 21432 KB Output is correct
8 Correct 11 ms 21460 KB Output is correct
9 Correct 11 ms 21492 KB Output is correct
10 Correct 1419 ms 48912 KB Output is correct
11 Correct 305 ms 63540 KB Output is correct
12 Correct 70 ms 27984 KB Output is correct
13 Correct 262 ms 53968 KB Output is correct
14 Correct 197 ms 94632 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 21460 KB Output is correct
2 Correct 10 ms 21460 KB Output is correct
3 Correct 11 ms 21488 KB Output is correct
4 Correct 11 ms 21460 KB Output is correct
5 Correct 11 ms 21428 KB Output is correct
6 Correct 10 ms 21460 KB Output is correct
7 Correct 10 ms 21432 KB Output is correct
8 Correct 11 ms 21460 KB Output is correct
9 Correct 11 ms 21492 KB Output is correct
10 Correct 10 ms 21524 KB Output is correct
11 Correct 12 ms 21516 KB Output is correct
12 Correct 10 ms 21460 KB Output is correct
13 Correct 11 ms 21460 KB Output is correct
14 Correct 12 ms 21488 KB Output is correct
15 Correct 11 ms 21460 KB Output is correct
16 Correct 11 ms 21456 KB Output is correct
17 Correct 12 ms 21444 KB Output is correct
18 Correct 10 ms 21460 KB Output is correct
19 Correct 10 ms 21460 KB Output is correct
20 Correct 10 ms 21392 KB Output is correct
21 Correct 11 ms 21544 KB Output is correct
22 Correct 11 ms 21516 KB Output is correct
23 Correct 11 ms 21460 KB Output is correct
24 Correct 10 ms 21460 KB Output is correct
25 Correct 11 ms 21460 KB Output is correct
26 Correct 11 ms 21532 KB Output is correct
27 Correct 15 ms 21672 KB Output is correct
28 Correct 12 ms 21828 KB Output is correct
29 Correct 12 ms 21844 KB Output is correct
30 Correct 12 ms 21652 KB Output is correct
31 Correct 12 ms 21588 KB Output is correct
32 Correct 13 ms 21460 KB Output is correct
33 Correct 11 ms 21588 KB Output is correct
34 Correct 13 ms 21704 KB Output is correct
35 Correct 12 ms 21592 KB Output is correct
36 Correct 12 ms 21844 KB Output is correct
37 Correct 12 ms 21884 KB Output is correct
38 Correct 13 ms 21952 KB Output is correct
39 Correct 15 ms 21972 KB Output is correct
40 Correct 14 ms 21704 KB Output is correct
41 Correct 11 ms 21588 KB Output is correct
42 Correct 1419 ms 48912 KB Output is correct
43 Correct 305 ms 63540 KB Output is correct
44 Correct 70 ms 27984 KB Output is correct
45 Correct 262 ms 53968 KB Output is correct
46 Correct 197 ms 94632 KB Output is correct
47 Correct 12 ms 21460 KB Output is correct
48 Correct 11 ms 21460 KB Output is correct
49 Correct 11 ms 21460 KB Output is correct
50 Correct 177 ms 78604 KB Output is correct
51 Correct 199 ms 77120 KB Output is correct
52 Correct 313 ms 52868 KB Output is correct
53 Correct 341 ms 53012 KB Output is correct
54 Correct 314 ms 60340 KB Output is correct
55 Correct 336 ms 55680 KB Output is correct
56 Correct 411 ms 66220 KB Output is correct
57 Correct 237 ms 58552 KB Output is correct
58 Correct 453 ms 69776 KB Output is correct
59 Correct 517 ms 70800 KB Output is correct
60 Correct 500 ms 82752 KB Output is correct
61 Correct 479 ms 83272 KB Output is correct
62 Correct 302 ms 51732 KB Output is correct
63 Correct 160 ms 53968 KB Output is correct
64 Correct 15 ms 22612 KB Output is correct
65 Correct 16 ms 22740 KB Output is correct
66 Correct 304 ms 52088 KB Output is correct
67 Correct 28 ms 28748 KB Output is correct
68 Correct 44 ms 33596 KB Output is correct
69 Correct 488 ms 71684 KB Output is correct
70 Correct 71 ms 45756 KB Output is correct
71 Correct 191 ms 94508 KB Output is correct
72 Correct 517 ms 71592 KB Output is correct
73 Correct 310 ms 52240 KB Output is correct