oj.uz

Submission #809735

# Submission time Handle Problem Language Result Execution time Memory
809735 2023-08-06T03:18:33 Z qwerasdfzxcl Keys (IOI21_keys) C++17
100 / 100
 504 ms 100596 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 12 ms 21472 KB Output is correct
2 Correct 13 ms 21460 KB Output is correct
3 Correct 10 ms 21464 KB Output is correct
4 Correct 12 ms 21460 KB Output is correct
5 Correct 12 ms 21464 KB Output is correct
6 Correct 11 ms 21460 KB Output is correct
7 Correct 11 ms 21460 KB Output is correct
8 Correct 13 ms 21464 KB Output is correct
9 Correct 11 ms 21468 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 21472 KB Output is correct
2 Correct 13 ms 21460 KB Output is correct
3 Correct 10 ms 21464 KB Output is correct
4 Correct 12 ms 21460 KB Output is correct
5 Correct 12 ms 21464 KB Output is correct
6 Correct 11 ms 21460 KB Output is correct
7 Correct 11 ms 21460 KB Output is correct
8 Correct 13 ms 21464 KB Output is correct
9 Correct 11 ms 21468 KB Output is correct
10 Correct 11 ms 21476 KB Output is correct
11 Correct 11 ms 21472 KB Output is correct
12 Correct 10 ms 21404 KB Output is correct
13 Correct 12 ms 21452 KB Output is correct
14 Correct 12 ms 21500 KB Output is correct
15 Correct 10 ms 21464 KB Output is correct
16 Correct 12 ms 21468 KB Output is correct
17 Correct 10 ms 21468 KB Output is correct
18 Correct 13 ms 21492 KB Output is correct
19 Correct 13 ms 21416 KB Output is correct
20 Correct 13 ms 21468 KB Output is correct
21 Correct 12 ms 21480 KB Output is correct
22 Correct 13 ms 21460 KB Output is correct
23 Correct 13 ms 21500 KB Output is correct
24 Correct 11 ms 21528 KB Output is correct
25 Correct 12 ms 21524 KB Output is correct
26 Correct 11 ms 21484 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 21472 KB Output is correct
2 Correct 13 ms 21460 KB Output is correct
3 Correct 10 ms 21464 KB Output is correct
4 Correct 12 ms 21460 KB Output is correct
5 Correct 12 ms 21464 KB Output is correct
6 Correct 11 ms 21460 KB Output is correct
7 Correct 11 ms 21460 KB Output is correct
8 Correct 13 ms 21464 KB Output is correct
9 Correct 11 ms 21468 KB Output is correct
10 Correct 11 ms 21476 KB Output is correct
11 Correct 11 ms 21472 KB Output is correct
12 Correct 10 ms 21404 KB Output is correct
13 Correct 12 ms 21452 KB Output is correct
14 Correct 12 ms 21500 KB Output is correct
15 Correct 10 ms 21464 KB Output is correct
16 Correct 12 ms 21468 KB Output is correct
17 Correct 10 ms 21468 KB Output is correct
18 Correct 13 ms 21492 KB Output is correct
19 Correct 13 ms 21416 KB Output is correct
20 Correct 13 ms 21468 KB Output is correct
21 Correct 12 ms 21480 KB Output is correct
22 Correct 13 ms 21460 KB Output is correct
23 Correct 13 ms 21500 KB Output is correct
24 Correct 11 ms 21528 KB Output is correct
25 Correct 12 ms 21524 KB Output is correct
26 Correct 11 ms 21484 KB Output is correct
27 Correct 13 ms 21832 KB Output is correct
28 Correct 12 ms 21844 KB Output is correct
29 Correct 13 ms 21796 KB Output is correct
30 Correct 12 ms 21624 KB Output is correct
31 Correct 13 ms 21608 KB Output is correct
32 Correct 12 ms 21472 KB Output is correct
33 Correct 11 ms 21616 KB Output is correct
34 Correct 13 ms 21728 KB Output is correct
35 Correct 13 ms 21724 KB Output is correct
36 Correct 13 ms 21864 KB Output is correct
37 Correct 13 ms 21844 KB Output is correct
38 Correct 12 ms 22000 KB Output is correct
39 Correct 14 ms 21988 KB Output is correct
40 Correct 12 ms 21608 KB Output is correct
41 Correct 15 ms 21716 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 21472 KB Output is correct
2 Correct 13 ms 21460 KB Output is correct
3 Correct 10 ms 21464 KB Output is correct
4 Correct 12 ms 21460 KB Output is correct
5 Correct 12 ms 21464 KB Output is correct
6 Correct 11 ms 21460 KB Output is correct
7 Correct 11 ms 21460 KB Output is correct
8 Correct 13 ms 21464 KB Output is correct
9 Correct 11 ms 21468 KB Output is correct
10 Correct 504 ms 53260 KB Output is correct
11 Correct 303 ms 67560 KB Output is correct
12 Correct 54 ms 28904 KB Output is correct
13 Correct 262 ms 59004 KB Output is correct
14 Correct 170 ms 99992 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 21472 KB Output is correct
2 Correct 13 ms 21460 KB Output is correct
3 Correct 10 ms 21464 KB Output is correct
4 Correct 12 ms 21460 KB Output is correct
5 Correct 12 ms 21464 KB Output is correct
6 Correct 11 ms 21460 KB Output is correct
7 Correct 11 ms 21460 KB Output is correct
8 Correct 13 ms 21464 KB Output is correct
9 Correct 11 ms 21468 KB Output is correct
10 Correct 11 ms 21476 KB Output is correct
11 Correct 11 ms 21472 KB Output is correct
12 Correct 10 ms 21404 KB Output is correct
13 Correct 12 ms 21452 KB Output is correct
14 Correct 12 ms 21500 KB Output is correct
15 Correct 10 ms 21464 KB Output is correct
16 Correct 12 ms 21468 KB Output is correct
17 Correct 10 ms 21468 KB Output is correct
18 Correct 13 ms 21492 KB Output is correct
19 Correct 13 ms 21416 KB Output is correct
20 Correct 13 ms 21468 KB Output is correct
21 Correct 12 ms 21480 KB Output is correct
22 Correct 13 ms 21460 KB Output is correct
23 Correct 13 ms 21500 KB Output is correct
24 Correct 11 ms 21528 KB Output is correct
25 Correct 12 ms 21524 KB Output is correct
26 Correct 11 ms 21484 KB Output is correct
27 Correct 13 ms 21832 KB Output is correct
28 Correct 12 ms 21844 KB Output is correct
29 Correct 13 ms 21796 KB Output is correct
30 Correct 12 ms 21624 KB Output is correct
31 Correct 13 ms 21608 KB Output is correct
32 Correct 12 ms 21472 KB Output is correct
33 Correct 11 ms 21616 KB Output is correct
34 Correct 13 ms 21728 KB Output is correct
35 Correct 13 ms 21724 KB Output is correct
36 Correct 13 ms 21864 KB Output is correct
37 Correct 13 ms 21844 KB Output is correct
38 Correct 12 ms 22000 KB Output is correct
39 Correct 14 ms 21988 KB Output is correct
40 Correct 12 ms 21608 KB Output is correct
41 Correct 15 ms 21716 KB Output is correct
42 Correct 504 ms 53260 KB Output is correct
43 Correct 303 ms 67560 KB Output is correct
44 Correct 54 ms 28904 KB Output is correct
45 Correct 262 ms 59004 KB Output is correct
46 Correct 170 ms 99992 KB Output is correct
47 Correct 13 ms 21464 KB Output is correct
48 Correct 11 ms 21464 KB Output is correct
49 Correct 13 ms 21448 KB Output is correct
50 Correct 145 ms 83080 KB Output is correct
51 Correct 169 ms 84752 KB Output is correct
52 Correct 312 ms 57924 KB Output is correct
53 Correct 281 ms 58012 KB Output is correct
54 Correct 309 ms 65356 KB Output is correct
55 Correct 228 ms 61376 KB Output is correct
56 Correct 355 ms 74112 KB Output is correct
57 Correct 208 ms 66528 KB Output is correct
58 Correct 334 ms 77732 KB Output is correct
59 Correct 397 ms 77784 KB Output is correct
60 Correct 371 ms 89460 KB Output is correct
61 Correct 439 ms 90120 KB Output is correct
62 Correct 290 ms 57740 KB Output is correct
63 Correct 183 ms 60444 KB Output is correct
64 Correct 13 ms 22740 KB Output is correct
65 Correct 17 ms 22704 KB Output is correct
66 Correct 285 ms 58296 KB Output is correct
67 Correct 26 ms 29388 KB Output is correct
68 Correct 46 ms 34528 KB Output is correct
69 Correct 435 ms 78484 KB Output is correct
70 Correct 64 ms 47676 KB Output is correct
71 Correct 169 ms 100596 KB Output is correct
72 Correct 438 ms 78556 KB Output is correct
73 Correct 265 ms 58256 KB Output is correct