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Submission #592873

# Submission time Handle Problem Language Result Execution time Memory
592873 2022-07-09T17:19:13 Z MohamedFaresNebili Parachute rings (IOI12_rings) C++14
52 / 100
 1484 ms 262144 KB 
#include <bits/stdc++.h>
/// #pragma GCC optimize ("Ofast")
/// #pragma GCC target ("avx2")
/// #pragma GCC optimize("unroll-loops")

                using namespace std;

                using ll = long long;
                using ld = long double;
                using ii = pair<ll, ll>;
                using vi = vector<int>;

                #define ff first
                #define ss second
                #define pb push_back
                #define all(x) (x).begin(), (x).end()
                #define lb lower_bound

                int N, P[1000001], C[1000001], S[1000001];
                vector<int> adj[1000001], R;
                set<int> res;
                bool vis[1000001];

                int findSet(int v) {
                    if(P[v] == v) return v;
                    return P[v] = findSet(P[v]);
                }
                void unionSet(int u, int v) {
                    u = findSet(u), v = findSet(v);
                    if(u == v) return;
                    P[v] = u; S[u] += S[v];
                }
                void Init(int n) {
                    N = n;
                    for(int l = 0; l < N; l++)
                        P[l] = l, res.insert(l);
                }
                void solve(set<int> cur) {
                    auto it = cur.begin(); set<int> New;
                    while(it != cur.end()) {
                        if(res.count(*it))
                            New.insert(*it);
                        it++;
                    }
                    swap(New, res);
                }
                bool dfs(int v, int p, int d) {
                    C[v] = p; vis[v] = 1;
                    R.push_back(v);
                    if(v == d) {
                        set<int> cur;
                        cur.insert(v); v = C[v];
                        while(v != d) {
                            cur.insert(v); v = C[v];
                        }
                        solve(cur);
                        return 1;
                    }
                    for(auto u : adj[v]) {
                        if(u == p || vis[u]) continue;
                        if(dfs(u, v, d)) return 1;
                    }
                    return 0;
                }
                void Link(int A, int B) {
                    int U = findSet(A), V = findSet(B);
                    adj[A].push_back(B);
                    adj[B].push_back(A);

                    if(U == V) {
                        S[U]++;
                        if(S[U] <= 3) dfs(A, B, B);
                        for(auto u : R) vis[u] = 0;
                        R.clear();

                        if(S[U] == 2) {
                            set<int> New;
                            auto it = res.begin();
                            while(it != res.end()) {
                                if(adj[*it].size() >= 3)
                                    New.insert(*it);
                                it++;
                            }
                            swap(New, res);
                        }

                    }
                    else unionSet(U, V);

                    set<int> New;
                    if(adj[A].size() == 4)
                        New.clear(), New.insert(A), solve(New);
                    if(adj[B].size() == 4)
                        New.clear(), New.insert(B), solve(New);
                    if(adj[A].size() == 3) {
                        New.clear(); New.insert(A);
                        for(auto u : adj[A])
                            New.insert(u);
                        solve(New);
                    }
                    if(adj[B].size() == 3) {
                        New.clear(); New.insert(B);
                        for(auto u : adj[B])
                            New.insert(u);
                        solve(New);
                    }
                }
                int CountCritical() {
                    return res.size();
                }

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23812 KB Output is correct
2 Correct 13 ms 24220 KB Output is correct
3 Correct 14 ms 24148 KB Output is correct
4 Correct 12 ms 23892 KB Output is correct
5 Correct 15 ms 24592 KB Output is correct
6 Correct 16 ms 25440 KB Output is correct
7 Correct 13 ms 24060 KB Output is correct
8 Correct 15 ms 24308 KB Output is correct
9 Correct 15 ms 24248 KB Output is correct
10 Correct 14 ms 24276 KB Output is correct

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 437 ms 75540 KB Output is correct
2 Correct 847 ms 92300 KB Output is correct
3 Correct 1211 ms 96740 KB Output is correct
4 Correct 1072 ms 125916 KB Output is correct
5 Correct 1103 ms 134724 KB Output is correct
6 Runtime error 1484 ms 262144 KB Execution killed with signal 9
7 Halted 0 ms 0 KB -

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23812 KB Output is correct
2 Correct 13 ms 24220 KB Output is correct
3 Correct 14 ms 24148 KB Output is correct
4 Correct 12 ms 23892 KB Output is correct
5 Correct 15 ms 24592 KB Output is correct
6 Correct 16 ms 25440 KB Output is correct
7 Correct 13 ms 24060 KB Output is correct
8 Correct 15 ms 24308 KB Output is correct
9 Correct 15 ms 24248 KB Output is correct
10 Correct 14 ms 24276 KB Output is correct
11 Correct 14 ms 24276 KB Output is correct
12 Correct 17 ms 24996 KB Output is correct
13 Correct 18 ms 24916 KB Output is correct
14 Correct 17 ms 24532 KB Output is correct
15 Correct 19 ms 25044 KB Output is correct
16 Correct 19 ms 24916 KB Output is correct
17 Correct 18 ms 24660 KB Output is correct
18 Correct 22 ms 25076 KB Output is correct
19 Correct 17 ms 24860 KB Output is correct
20 Correct 18 ms 24664 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23812 KB Output is correct
2 Correct 13 ms 24220 KB Output is correct
3 Correct 14 ms 24148 KB Output is correct
4 Correct 12 ms 23892 KB Output is correct
5 Correct 15 ms 24592 KB Output is correct
6 Correct 16 ms 25440 KB Output is correct
7 Correct 13 ms 24060 KB Output is correct
8 Correct 15 ms 24308 KB Output is correct
9 Correct 15 ms 24248 KB Output is correct
10 Correct 14 ms 24276 KB Output is correct
11 Correct 14 ms 24276 KB Output is correct
12 Correct 17 ms 24996 KB Output is correct
13 Correct 18 ms 24916 KB Output is correct
14 Correct 17 ms 24532 KB Output is correct
15 Correct 19 ms 25044 KB Output is correct
16 Correct 19 ms 24916 KB Output is correct
17 Correct 18 ms 24660 KB Output is correct
18 Correct 22 ms 25076 KB Output is correct
19 Correct 17 ms 24860 KB Output is correct
20 Correct 18 ms 24664 KB Output is correct
21 Correct 41 ms 27940 KB Output is correct
22 Correct 53 ms 30376 KB Output is correct
23 Correct 64 ms 32076 KB Output is correct
24 Correct 67 ms 30184 KB Output is correct
25 Correct 43 ms 29616 KB Output is correct
26 Correct 68 ms 30668 KB Output is correct
27 Correct 81 ms 32160 KB Output is correct
28 Correct 62 ms 30276 KB Output is correct
29 Correct 58 ms 30148 KB Output is correct
30 Correct 86 ms 37880 KB Output is correct

Subtask #5
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23812 KB Output is correct
2 Correct 13 ms 24220 KB Output is correct
3 Correct 14 ms 24148 KB Output is correct
4 Correct 12 ms 23892 KB Output is correct
5 Correct 15 ms 24592 KB Output is correct
6 Correct 16 ms 25440 KB Output is correct
7 Correct 13 ms 24060 KB Output is correct
8 Correct 15 ms 24308 KB Output is correct
9 Correct 15 ms 24248 KB Output is correct
10 Correct 14 ms 24276 KB Output is correct
11 Correct 437 ms 75540 KB Output is correct
12 Correct 847 ms 92300 KB Output is correct
13 Correct 1211 ms 96740 KB Output is correct
14 Correct 1072 ms 125916 KB Output is correct
15 Correct 1103 ms 134724 KB Output is correct
16 Runtime error 1484 ms 262144 KB Execution killed with signal 9
17 Halted 0 ms 0 KB -