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Submission #630459

# Submission time Handle Problem Language Result Execution time Memory
630459 2022-08-16T11:41:53 Z Ooops_sorry Game (APIO22_game) C++17
60 / 100
 4000 ms 40256 KB 
#include<bits/stdc++.h>

using namespace std;

mt19937 rnd(51);

#define ll long long
#define pb push_back
#define ld long double

const int N = 3e5 + 10, INF = 1e9, K = 100;
int n, k, in_block[N], out_block[N], in[N], out[N], block[N], cnt[N], q[N];
bool used[N];
vector<int> g[N], gr[N];
bool cycle = 0;
set<int> need;

void dfs_block(int u) {
    int l = 0, r = 0;
    q[r++] = u;
    while (l < r) {
        int v = q[l++];
        if (v >= k && out_block[v] < in_block[v]) {
            cycle = 1;
        }
        if (v >= k && !used[v] && out_block[v] == in_block[v]) {
            need.insert(in_block[v]);
            block[v] = in_block[v];
            used[v] = 1;
        }
        for (auto to : g[v]) {
            if (in_block[v] > in_block[to]) {
                in_block[to] = in_block[v];
                q[r++] = to;
            }
        }
    }
}

void zhfs_block(int u) {
    int l = 0, r = 0;
    q[r++] = u;
    while (l < r) {
        int v = q[l++];
        if (v >= k && out_block[v] < in_block[v]) {
            cycle = 1;
        }
        if (v >= k && !used[v] && out_block[v] == in_block[v]) {
            need.insert(in_block[v]);
            block[v] = in_block[v];
            used[v] = 1;
        }
        for (auto to : gr[v]) {
            if (out_block[v] < out_block[to]) {
                out_block[to] = out_block[v];
                q[r++] = to;
            }
        }
    }
}

void dfs(int u) {
    int l = 0, r = 0;
    q[r++] = u;
    while (l < r) {
        int v = q[l++];
        if (v >= k && out[v] <= in[v]) {
            cycle = 1;
        }
        for (auto to : g[v]) {
            if (block[v] == block[to] && in[v] > in[to]) {
                in[to] = in[v];
                q[r++] = to;
            }
        }
    }
}

void zhfs(int u) {
    int l = 0, r = 0;
    q[r++] = u;
    while (l < r) {
        int v = q[l++];
        if (v >= k && out[v] <= in[v]) {
            cycle = 1;
        }
        for (auto to : gr[v]) {
            if (block[v] == block[to] && out[v] < out[to]) {
                out[to] = out[v];
                q[r++] = to;
            }
        }
    }
}

int add_teleporter(int u, int v) {
    if (max(u, v) < k) {
        if (u >= v) {
            cycle = 1;
        }
    } else {
        g[u].pb(v);
        gr[v].pb(u);
        if (in_block[v] < in_block[u]) {
            in_block[v] = in_block[u];
            dfs_block(v);
        }
        if (out_block[u] > out_block[v]) {
            out_block[u] = out_block[v];
            zhfs_block(u);
        }
        for (auto v : need) {
            for (int vert = v * K; vert < min(k, (v + 1) * K); vert++) {
                zhfs(vert);
                dfs(vert);
            }
        }
        need.clear();
        if (block[v] == block[u] && in[v] < in[u]) {
            in[v] = in[u];
            dfs(v);
        }
        if (block[v] == block[u] && out[u] > out[v]) {
            out[u] = out[v];
            zhfs(u);
        }
    }
    return cycle;
}

void init(int n_, int k_) {
    n = n_, k = k_;
    for (int i = 0; i < n; i++) {
        in_block[i] = -INF, out_block[i] = INF;
        in[i] = -INF, out[i] = INF;
        block[i] = -(i + 1);
    }
    for (int i = 0; i < k; i++) {
        in_block[i] = out_block[i] = block[i] = i / K;
        in[i] = out[i] = i;
    }
}

#ifdef LOCAL

signed main() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
#endif // LOCAL
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m, k;
    cin >> n >> m >> k;
    vector<pair<int,int>> e(m);
    for (int i = 0; i < m; i++) {
        cin >> e[i].first >> e[i].second;
    }
    init(n, k);
    int i;
    for (i = 0; i < m; i++) {
        int res = add_teleporter(e[i].first, e[i].second);
        assert(res == 0 || res == 1);
        if (res == 1) {
            break;
        }
    }
    cout << i << endl;
    return 0;
}

#endif // LOCAL

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14416 KB Output is correct
2 Correct 7 ms 14332 KB Output is correct
3 Correct 8 ms 14380 KB Output is correct
4 Correct 7 ms 14316 KB Output is correct
5 Correct 7 ms 14416 KB Output is correct
6 Correct 7 ms 14416 KB Output is correct
7 Correct 7 ms 14416 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14416 KB Output is correct
2 Correct 7 ms 14332 KB Output is correct
3 Correct 8 ms 14380 KB Output is correct
4 Correct 7 ms 14316 KB Output is correct
5 Correct 7 ms 14416 KB Output is correct
6 Correct 7 ms 14416 KB Output is correct
7 Correct 7 ms 14416 KB Output is correct
8 Correct 7 ms 14416 KB Output is correct
9 Correct 8 ms 14416 KB Output is correct
10 Correct 9 ms 14404 KB Output is correct
11 Correct 8 ms 14416 KB Output is correct
12 Correct 8 ms 14416 KB Output is correct
13 Correct 7 ms 14416 KB Output is correct
14 Correct 8 ms 14416 KB Output is correct
15 Correct 7 ms 14408 KB Output is correct
16 Correct 7 ms 14412 KB Output is correct
17 Correct 9 ms 14416 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 8 ms 14416 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14416 KB Output is correct
2 Correct 7 ms 14332 KB Output is correct
3 Correct 8 ms 14380 KB Output is correct
4 Correct 7 ms 14316 KB Output is correct
5 Correct 7 ms 14416 KB Output is correct
6 Correct 7 ms 14416 KB Output is correct
7 Correct 7 ms 14416 KB Output is correct
8 Correct 7 ms 14416 KB Output is correct
9 Correct 8 ms 14416 KB Output is correct
10 Correct 9 ms 14404 KB Output is correct
11 Correct 8 ms 14416 KB Output is correct
12 Correct 8 ms 14416 KB Output is correct
13 Correct 7 ms 14416 KB Output is correct
14 Correct 8 ms 14416 KB Output is correct
15 Correct 7 ms 14408 KB Output is correct
16 Correct 7 ms 14412 KB Output is correct
17 Correct 9 ms 14416 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 8 ms 14416 KB Output is correct
20 Correct 8 ms 14404 KB Output is correct
21 Correct 7 ms 14416 KB Output is correct
22 Correct 8 ms 14416 KB Output is correct
23 Correct 7 ms 14456 KB Output is correct
24 Correct 8 ms 14416 KB Output is correct
25 Correct 9 ms 14544 KB Output is correct
26 Correct 10 ms 14500 KB Output is correct
27 Correct 11 ms 14460 KB Output is correct
28 Correct 8 ms 14416 KB Output is correct
29 Correct 9 ms 14416 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14416 KB Output is correct
2 Correct 7 ms 14332 KB Output is correct
3 Correct 8 ms 14380 KB Output is correct
4 Correct 7 ms 14316 KB Output is correct
5 Correct 7 ms 14416 KB Output is correct
6 Correct 7 ms 14416 KB Output is correct
7 Correct 7 ms 14416 KB Output is correct
8 Correct 7 ms 14416 KB Output is correct
9 Correct 8 ms 14416 KB Output is correct
10 Correct 9 ms 14404 KB Output is correct
11 Correct 8 ms 14416 KB Output is correct
12 Correct 8 ms 14416 KB Output is correct
13 Correct 7 ms 14416 KB Output is correct
14 Correct 8 ms 14416 KB Output is correct
15 Correct 7 ms 14408 KB Output is correct
16 Correct 7 ms 14412 KB Output is correct
17 Correct 9 ms 14416 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 8 ms 14416 KB Output is correct
20 Correct 8 ms 14404 KB Output is correct
21 Correct 7 ms 14416 KB Output is correct
22 Correct 8 ms 14416 KB Output is correct
23 Correct 7 ms 14456 KB Output is correct
24 Correct 8 ms 14416 KB Output is correct
25 Correct 9 ms 14544 KB Output is correct
26 Correct 10 ms 14500 KB Output is correct
27 Correct 11 ms 14460 KB Output is correct
28 Correct 8 ms 14416 KB Output is correct
29 Correct 9 ms 14416 KB Output is correct
30 Correct 22 ms 16132 KB Output is correct
31 Correct 12 ms 15344 KB Output is correct
32 Correct 29 ms 16840 KB Output is correct
33 Correct 23 ms 16848 KB Output is correct
34 Correct 45 ms 16924 KB Output is correct
35 Correct 70 ms 16988 KB Output is correct
36 Correct 52 ms 16952 KB Output is correct
37 Correct 46 ms 16904 KB Output is correct
38 Correct 47 ms 16584 KB Output is correct
39 Correct 79 ms 16604 KB Output is correct
40 Correct 49 ms 17152 KB Output is correct
41 Correct 47 ms 16688 KB Output is correct
42 Correct 40 ms 16712 KB Output is correct
43 Correct 46 ms 17076 KB Output is correct
44 Correct 70 ms 16968 KB Output is correct

Subtask #5
0.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14416 KB Output is correct
2 Correct 7 ms 14332 KB Output is correct
3 Correct 8 ms 14380 KB Output is correct
4 Correct 7 ms 14316 KB Output is correct
5 Correct 7 ms 14416 KB Output is correct
6 Correct 7 ms 14416 KB Output is correct
7 Correct 7 ms 14416 KB Output is correct
8 Correct 7 ms 14416 KB Output is correct
9 Correct 8 ms 14416 KB Output is correct
10 Correct 9 ms 14404 KB Output is correct
11 Correct 8 ms 14416 KB Output is correct
12 Correct 8 ms 14416 KB Output is correct
13 Correct 7 ms 14416 KB Output is correct
14 Correct 8 ms 14416 KB Output is correct
15 Correct 7 ms 14408 KB Output is correct
16 Correct 7 ms 14412 KB Output is correct
17 Correct 9 ms 14416 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 8 ms 14416 KB Output is correct
20 Correct 8 ms 14404 KB Output is correct
21 Correct 7 ms 14416 KB Output is correct
22 Correct 8 ms 14416 KB Output is correct
23 Correct 7 ms 14456 KB Output is correct
24 Correct 8 ms 14416 KB Output is correct
25 Correct 9 ms 14544 KB Output is correct
26 Correct 10 ms 14500 KB Output is correct
27 Correct 11 ms 14460 KB Output is correct
28 Correct 8 ms 14416 KB Output is correct
29 Correct 9 ms 14416 KB Output is correct
30 Correct 22 ms 16132 KB Output is correct
31 Correct 12 ms 15344 KB Output is correct
32 Correct 29 ms 16840 KB Output is correct
33 Correct 23 ms 16848 KB Output is correct
34 Correct 45 ms 16924 KB Output is correct
35 Correct 70 ms 16988 KB Output is correct
36 Correct 52 ms 16952 KB Output is correct
37 Correct 46 ms 16904 KB Output is correct
38 Correct 47 ms 16584 KB Output is correct
39 Correct 79 ms 16604 KB Output is correct
40 Correct 49 ms 17152 KB Output is correct
41 Correct 47 ms 16688 KB Output is correct
42 Correct 40 ms 16712 KB Output is correct
43 Correct 46 ms 17076 KB Output is correct
44 Correct 70 ms 16968 KB Output is correct
45 Correct 261 ms 31748 KB Output is correct
46 Correct 16 ms 20688 KB Output is correct
47 Correct 15 ms 20564 KB Output is correct
48 Correct 427 ms 40256 KB Output is correct
49 Correct 283 ms 39224 KB Output is correct
50 Execution timed out 4030 ms 31044 KB Time limit exceeded
51 Halted 0 ms 0 KB -